Traveling While Pregnant: A Physician's Guide to Safe Travel, Vaccines, and Medications

For most healthy pregnancies, travel is safe, and the second trimester (roughly weeks 14 to 28) is the best window to go. By then morning sickness has usually settled, energy is back, and the risks of early miscarriage and late-pregnancy labor are both at their lowest. As an emergency medicine physician, the cases I worry about are the preventable ones: a blood clot on a long flight, a serious infection from contaminated food or water, or a malaria exposure that was never planned for. The two biggest decisions to get right before you go are which vaccines and medications are safe in pregnancy, and whether your destination carries risks like Zika or malaria that pregnancy makes far more dangerous. This guide walks through both, with the current CDC and ACOG recommendations.

Is It Safe to Travel While Pregnant?

Yes, travel during an uncomplicated pregnancy is generally safe, and ACOG states that occasional air travel is safe for pregnant people, with cohort studies showing no increase in adverse pregnancy outcomes for occasional flyers. The caveats are about timing, destination, and your individual obstetric history. The single most important step is a conversation with your own obstetrician or midwife before you book, because they know your pregnancy in a way no general guide can.

Some pregnancies carry conditions that make travel riskier, including preeclampsia, a history of preterm labor, placental problems, cervical insufficiency, or a multiple pregnancy. For these, your obstetric provider may advise staying closer to home. For a low-risk pregnancy, the medical green light is common, and the work shifts to preparing well: choosing the right time to go, picking a destination without serious infectious risk, and lining up the safe vaccines and medications your trip needs.

The Best Time to Travel During Pregnancy

The second trimester is the sweet spot for travel. Weeks 14 to 28 combine the lowest symptom burden with the lowest medical risk, which is why most clinicians, including the team at ACOG, point pregnant travelers to this window. Early pregnancy carries nausea, fatigue, and the highest miscarriage risk, while late pregnancy brings discomfort, swelling, and the possibility of going into labor far from your care team.

Here is how the three trimesters compare for travel planning:

Whenever you go, ACOG recommends a prenatal checkup 4 to 6 weeks before departure so your provider can confirm you are fit to travel and address any destination-specific concerns. Carry a copy of your prenatal records with you, including your blood type, due date, and any pregnancy complications, so any clinician you see abroad can pick up where your provider left off.

Flying While Pregnant: Airline Cutoffs, Blood Clots, and Comfort

Flying is safe for most pregnant travelers, but two issues need planning: airline cutoff dates and the elevated risk of blood clots. Most US airlines allow domestic flights until about 36 weeks of pregnancy, and international carriers often set an earlier limit, sometimes around 28 to 35 weeks. Some airlines also require a letter from your obstetric provider confirming your due date, so check the specific airline's policy well before you fly.

The bigger medical concern is venous thromboembolism, the medical term for a blood clot in a deep vein. Pregnancy raises clot risk on its own, by roughly four to five times compared with non-pregnant women of the same age, because of natural changes in blood clotting and slower blood return from the legs. Long-haul flying adds to that risk through hours of immobility. As I tell my own patients, pregnancy and a long flight are each a clotting risk, and you do not want to stack them without taking simple precautions.

To lower clot risk in the air, ACOG and the CDC recommend a few concrete steps:

• Move often. Walk the aisle every hour or two and flex your calves and ankles while seated.
• Wear graduated compression stockings. These improve blood return from the legs and are one of the most effective measures.
• Stay hydrated. Drink water steadily and limit caffeine, which is dehydrating.
• Dress loosely. Avoid tight clothing at the waist and legs that restricts circulation.
• Book the aisle. An aisle seat makes it easier to get up and move.

Wear your seatbelt low, across your hips and under your belly, whenever you are seated. The same clot-prevention logic applies to long car and train rides: build in stops to stand and stretch. For a deeper look at clot prevention on long journeys, see our guide on how to prevent DVT on long flights.

Vaccines During Pregnancy: What Is Safe and What to Avoid

The core rule is straightforward: inactivated vaccines are generally safe in pregnancy, while live vaccines are usually avoided. Live vaccines contain a weakened form of the virus, and out of caution they are not given during pregnancy because of a theoretical risk to the fetus. Inactivated vaccines cannot cause infection and are used routinely.

Vaccines that are recommended or safe during pregnancy include the inactivated influenza shot (recommended for all pregnant people during flu season) and Tdap, which the CDC recommends in every pregnancy, ideally between 27 and 36 weeks, to protect the newborn against whooping cough. Hepatitis A and hepatitis B vaccines can be given in pregnancy when travel risk warrants them. The live vaccines generally avoided in pregnancy include MMR (measles, mumps, rubella), varicella (chickenpox), and the live nasal-spray flu vaccine.

Yellow fever vaccine is the one that needs a careful conversation. It is a live vaccine, so the CDC advises avoiding it in pregnancy unless travel to an area with ongoing yellow fever transmission is unavoidable, in which case the benefit of protection may outweigh the theoretical risk. If you cannot get the vaccine and a country requires proof of yellow fever vaccination for entry, your provider can issue a medical waiver letter, but remember that a waiver satisfies a border requirement; it does not protect you from the disease. The safest move is often to choose a second-trimester destination without yellow fever risk in the first place.

If your trip does call for travel vaccines that are safe in pregnancy, Wandr makes the booking simple. You pick a partner pharmacy, a date, and a time, and Wandr schedules the appointment so the pharmacist can administer your travel vaccines on-site. There is no separate doctor's visit and no calling multiple pharmacies to find one with the vaccine in stock. You can review which shots a destination needs in our travel vaccines guide.

Malaria and Pregnancy: Which Prevention Pills Are Safe

Malaria is markedly more dangerous in pregnancy, so destination choice matters more than usual. Pregnant women are at higher risk of severe malaria, and infection raises the chance of miscarriage, stillbirth, premature birth, and low birth weight. For that reason, the CDC advises pregnant travelers to avoid travel to areas with chloroquine-resistant malaria when it is at all possible. If a malaria-risk trip cannot be avoided, prevention medication and rigorous mosquito-bite protection become essential, and the choice of pill is restricted in pregnancy.

Not every antimalarial is safe while pregnant. Here is how the common options compare:

Because mefloquine is one of the few prophylaxis options considered safe across all trimesters, it is frequently the antimalarial of choice for pregnant travelers who must enter a chloroquine-resistant region. This is a decision to make with a clinician who can weigh your destination, itinerary, and history. When a prescription is appropriate, Wandr's clinicians call it in to your local pharmacy for pickup, so you can start it on the correct schedule before you leave. You can read more about the options in our travel medications overview.

Whatever the pill, mosquito-bite prevention does the heavy lifting. The EPA-registered repellents DEET and picaridin are safe to use in pregnancy when applied according to the label, and they are the backbone of malaria and Zika protection. Our guide to DEET, picaridin, and permethrin covers how to use each one effectively.

Zika and Other Mosquito-Borne Risks

Zika is the infection that most often changes travel plans during pregnancy, because it can cause serious birth defects. Zika infection during pregnancy is linked to congenital Zika syndrome, including microcephaly, a smaller-than-expected head and brain. For that reason, the CDC advises pregnant women to avoid travel to any area with an active Zika Travel Health Notice. The risk picture shifts over time, so the practical step is to check the CDC's Zika risk map for your specific destination before you commit.

If you are pregnant and must travel to an area with Zika risk, the CDC's advice is to strictly prevent mosquito bites throughout your trip and to prevent sexual transmission during and after travel, since Zika can pass between partners. That means covering up, using DEET or picaridin, sleeping under screens or nets, and using condoms or abstaining for the period your provider recommends. Our full Zika prevention guide for travelers goes into the details for couples who are pregnant or trying to conceive.

Zika is not the only mosquito-borne concern. Dengue can be more severe in pregnancy and can pass to the baby around delivery, and the daytime-biting mosquitoes that carry dengue and Zika are the same. The takeaway is consistent: in any tropical or subtropical destination, treat mosquito-bite prevention as a round-the-clock priority, not an evening afterthought.

Traveler's Diarrhea and Food and Water Safety When Pregnant

Traveler's diarrhea deserves extra respect in pregnancy because dehydration is riskier for both you and the baby. The infection itself is usually the same gut bug other travelers get, but losing fluid and salt while pregnant can reduce blood flow to the uterus and, in late pregnancy, even trigger contractions. Prevention through careful food and water choices is the first line of defense: drink sealed or boiled water, skip ice of unknown origin, eat food that is steaming hot and freshly cooked, and avoid raw produce you did not peel yourself.

Medication choices are more limited than for non-pregnant travelers. Bismuth subsalicylate, the active ingredient in Pepto-Bismol, should be avoided in pregnancy, especially in the third trimester. If an antibiotic is needed for moderate to severe traveler's diarrhea, azithromycin is the preferred choice in pregnancy, since the fluoroquinolones like ciprofloxacin are generally avoided. Oral rehydration is the cornerstone of treatment: replacing water and electrolytes matters more than any pill. Our complete traveler's diarrhea guide covers prevention and treatment in depth, and a clinician can advise which standby options fit your pregnancy.

Stay alert for warning signs that need prompt medical care: a fever above 102°F, bloody stools, signs of significant dehydration such as dizziness or producing little urine, or any contractions or decreased fetal movement. When in doubt during pregnancy, get evaluated sooner rather than later.

Travel Insurance and Medical Care Abroad

Before any international trip during pregnancy, confirm that your insurance will actually cover you. Many standard travel insurance policies exclude pregnancy-related care, and routine US health plans often do not cover medical treatment in another country. The two things to verify in writing are coverage for pregnancy complications and coverage for emergency medical evacuation, which can cost tens of thousands of dollars if you need to be flown to adequate care.

It is also worth doing a little homework on the medical facilities at your destination. Know where the nearest hospital with obstetric and newborn capabilities is, especially if you are traveling later in pregnancy or somewhere remote. Save the local emergency number and the contact details for your obstetric provider at home. Preparation here is not about expecting the worst; it is about removing the panic from a situation that is far easier to manage when you already know where to go.

A Pre-Trip Checklist for Pregnant Travelers

Pulling it together, here is the sequence I recommend to pregnant travelers, ideally starting 4 to 8 weeks out:

1. See your obstetric provider for a checkup 4 to 6 weeks before departure and get the green light for your specific itinerary.
2. Aim for the second trimester when you can, and confirm your airline's cutoff date and any required provider letter.
3. Research your destination's risks, especially Zika, malaria, and dengue, using the CDC destination pages and Zika map.
4. Sort out safe vaccines and medications your trip needs, and confirm which are appropriate in pregnancy.
5. Pack a pregnancy-aware travel kit, including prenatal vitamins, EPA-registered repellent, oral rehydration salts, and any provider-approved standby medications.
6. Confirm insurance that covers pregnancy complications and medical evacuation abroad.
7. Carry your prenatal records and a list of your medications and allergies.

A free pre-trip health check is an easy way to start steps 3 through 5 in one place, with a clinician reviewing your destination and itinerary against your pregnancy.

How Wandr Helps Pregnant Travelers Prepare

Wandr is a physician-founded travel health platform built to handle exactly this kind of planning without a separate clinic trip. Our free pre-trip health check reviews your destination, your itinerary, and your current medications, then flags what your trip needs and what to avoid in pregnancy. For vaccines that are safe to get, Wandr books your appointment at a partner pharmacy near you, where the pharmacist administers them on-site. For prescription medications that are appropriate for your trip, our clinicians call the prescription in to your local pharmacy for pickup, on the schedule that fits your departure date.

Everything sits in one place: prescription medications, vaccine appointment booking, travel insurance, and physician-written destination health guides. Compared with a traditional travel clinic visit, which often runs $100 or more in consultation fees plus drive time, the online model saves money and hassle while keeping a clinician between you and your trip. Because every recommendation is tailored, your obstetric provider stays the final word on what is right for your pregnancy.

Planning a trip while pregnant? Start your free pre-trip health check and travel prepared.

Frequently Asked Questions

Is it safe to travel while pregnant? For most uncomplicated pregnancies, yes. ACOG states that occasional air travel is safe and is not associated with worse pregnancy outcomes. The key steps are clearing the trip with your obstetric provider, traveling in the second trimester when possible, and choosing a destination without serious infectious risks like active Zika transmission.

What is the best time during pregnancy to travel? The second trimester, roughly weeks 14 to 28, is the recommended window. Morning sickness and fatigue have usually eased, energy is higher, and the risks of early miscarriage and late-pregnancy labor are both lowest. ACOG also recommends a prenatal checkup 4 to 6 weeks before you leave.

Until how many weeks can you fly while pregnant? Most US airlines allow domestic flights until about 36 weeks of pregnancy, and international carriers often set an earlier cutoff. Policies vary, and some airlines require a letter from your provider confirming your due date, so check the specific airline's rules before booking.

Which vaccines are safe during pregnancy for travel? Inactivated vaccines are generally safe, including the flu shot, Tdap, and hepatitis A and B when travel warrants them. Live vaccines such as MMR, varicella, and the nasal-spray flu vaccine are avoided. Yellow fever vaccine, which is live, is given only when travel to a transmission area is unavoidable.

Which malaria pills are safe to take while pregnant? Chloroquine and mefloquine are considered safe in pregnancy, with mefloquine preferred for chloroquine-resistant areas. Atovaquone-proguanil (Malarone) is not recommended, doxycycline is contraindicated, and tafenoquine is contraindicated. The CDC advises avoiding travel to chloroquine-resistant malaria areas during pregnancy when possible.

Can I travel to an area with Zika while pregnant? The CDC advises pregnant women to avoid travel to any area with an active Zika Travel Health Notice, because Zika in pregnancy can cause serious birth defects. If travel is unavoidable, strictly prevent mosquito bites throughout the trip and prevent sexual transmission during and after travel. Always check the CDC Zika map for your destination first.

Can pregnant travelers take medication for traveler's diarrhea? Rehydration is the priority, since dehydration is riskier in pregnancy. Bismuth subsalicylate (Pepto-Bismol) should be avoided. If an antibiotic is needed, azithromycin is the preferred choice in pregnancy, while fluoroquinolones like ciprofloxacin are generally avoided. Discuss standby options with a clinician before you travel.

Is insect repellent safe to use during pregnancy? Yes. The CDC and EPA state that EPA-registered repellents, including DEET and picaridin, are safe to use during pregnancy when applied according to the product label. Given the risks of Zika, malaria, and dengue, consistent repellent use is one of the most important protections for pregnant travelers.

Medical Disclaimer

This article is for general educational purposes and does not replace personalized medical advice. Pregnancy adds individual factors that only your obstetric provider can weigh. Always consult your obstetrician or midwife and a travel health clinician about your specific pregnancy, destination, medications, and vaccines before you travel. If you experience contractions, bleeding, decreased fetal movement, severe dehydration, or other concerning symptoms while traveling, seek medical care promptly.

Sources

• CDC Yellow Book 2026, "Pregnant Travelers." https://www.cdc.gov/yellow-book/hcp/family-travel/pregnant-travelers.html
• CDC Travelers' Health, "Pregnant Travelers." https://wwwnc.cdc.gov/travel/page/pregnant-travelers
• CDC Yellow Book 2026, "Malaria." https://www.cdc.gov/yellow-book/hcp/travel-associated-infections-diseases/malaria.html
• CDC Zika Virus, "Recommendations for Travelers and People Living Abroad." https://www.cdc.gov/zika/travel/index.html
• CDC Zika Virus, "Countries and Territories at Risk for Zika." https://www.cdc.gov/zika/geo/index.html
• American College of Obstetricians and Gynecologists (ACOG), "Travel During Pregnancy" (FAQ). https://www.acog.org/womens-health/faqs/travel-during-pregnancy
• American College of Obstetricians and Gynecologists (ACOG), "Air Travel During Pregnancy" (Committee Opinion). https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2018/08/air-travel-during-pregnancy
• World Health Organization, "Malaria in pregnant women." https://www.who.int/teams/global-malaria-programme/prevention/malaria-in-pregnant-women