Most airlines restrict flying beyond 36 weeks of pregnancy, but it varies by airline policy and health considerations.
Flying during pregnancy is often a necessity, whether for family visits, work obligations, or a well-deserved vacation. But there comes a point when travel is not only uncomfortable but also restricted by medical advice and airline regulations. Understanding when it becomes unsafe or inadvisable to fly is crucial for planning trips during pregnancy.
Airline Policies and Guidelines
Standard Airline Rules
Most airlines impose flying restrictions on pregnant passengers starting around the 36th week of pregnancy. This aligns with the onset of the ninth month, when labor could happen at any time. Some international airlines, however, might restrict flying even earlier, especially for long-haul flights. For twin or multiple pregnancies, restrictions may apply even sooner, generally around the 32nd week.
Policies vary from one airline to another, so it’s important to confirm with the carrier before booking. Some airlines may require a medical certificate or clearance from a healthcare provider, especially for flights beyond 28 weeks. This documentation typically confirms the expected due date and that flying poses no immediate risk.
Why Airlines Have These Restrictions
Airlines have these restrictions in place to minimize risks associated with potential in-flight labor or other pregnancy complications. Air travel at high altitudes can decrease oxygen levels slightly, which isn’t usually an issue for most pregnant women but could become concerning in high-risk pregnancies. Additionally, limited access to emergency medical care onboard increases the risk factors for both the mother and baby.
The confined space, pressure changes, and immobility during long flights may increase the risk of blood clots (deep vein thrombosis, or DVT), which is a serious concern for pregnant travelers.
Medical Considerations for Air Travel
Ideal Time for Travel
The best time to fly during pregnancy is usually the second trimester, between 14 and 28 weeks. By this point, morning sickness has often subsided, and energy levels have typically improved. The risk of miscarriage drops significantly, and labor is still far away.
The second trimester is considered the “sweet spot” for travel because most pregnant women feel their best during these weeks. The belly isn’t too large, and movement is still relatively comfortable. Traveling during the first trimester is often safe but might be unpleasant due to morning sickness and fatigue. In contrast, the third trimester comes with increased discomfort and a higher risk of labor.
Health Factors to Consider
Several health conditions can complicate air travel during pregnancy. Women with high-risk pregnancies, a history of preterm labor, or placental issues should consult with a healthcare provider before flying. Other conditions like high blood pressure, gestational diabetes, or preeclampsia also warrant caution.
Dehydration is another concern during flights, as cabin air tends to be dry. Staying hydrated by drinking water and avoiding caffeine can help minimize discomfort and reduce the risk of complications. Wearing compression stockings can also help prevent blood clots.
Risks of Flying Late in Pregnancy
Preterm Labor
One of the biggest concerns with flying late in pregnancy is the risk of preterm labor. While it’s rare for air travel to directly trigger labor, the risk increases as the due date approaches. If labor starts in-flight, it can be challenging to manage, given the limited medical resources available.
Most airlines avoid taking this risk, hence the strict policies. If labor does begin during a flight, the crew is trained to handle medical emergencies, but the outcome is far from ideal compared to being in a hospital setting.
Deep Vein Thrombosis (DVT)
Pregnancy increases the risk of developing blood clots, and air travel exacerbates this risk. Sitting for extended periods can restrict blood flow, particularly in the legs. DVT is a serious and potentially life-threatening condition, but there are ways to mitigate the risk.
Wearing compression stockings, taking short walks every hour, and doing simple leg exercises while seated can help promote circulation. Drinking plenty of fluids and wearing loose, comfortable clothing also contribute to reducing the risk.
General Discomfort
Beyond the medical risks, flying during the third trimester can be uncomfortable. The cramped seating, reduced mobility, and frequent need to use the bathroom make for a less-than-pleasant experience. Swelling in the feet and ankles is common, as is back pain and overall fatigue.
These physical challenges make long flights especially difficult. Choosing an aisle seat for easier access to the bathroom and standing up to stretch frequently can alleviate some discomfort.
Table: Airline Pregnancy Travel Policies
Airline |
Weeks Allowed to Fly |
Medical Certificate Required |
Delta |
Up to 36 weeks |
Recommended after 28 weeks |
American Airlines |
Up to 36 weeks (domestic) |
Required within 4 weeks of due date |
British Airways |
Up to 36 weeks (singleton) |
Required after 28 weeks |
Emirates |
Up to 32 weeks (multiple) |
Required from 29 weeks |
United Airlines |
No restriction up to 36 weeks |
Advised to carry documentation |
Note: Policies can change, and travelers should always verify with the airline.
Preparing for Air Travel During Pregnancy
Choosing the Right Seat
Selecting the right seat can make a significant difference in comfort levels. An aisle seat provides easier access to the restroom and allows for more frequent movement. Bulkhead seats offer extra legroom, which can help alleviate swelling and discomfort. If possible, upgrading to a class with more space is worth considering.
Placing a small pillow or cushion behind the lower back can provide additional support, and elevating the feet when possible can reduce swelling. Packing a blanket or wearing layers helps adjust to fluctuating cabin temperatures.
Packing Essentials
Packing thoughtfully can make the flight more manageable. Must-haves include:
- Hydration supplies: A refillable water bottle to combat dehydration.
- Healthy snacks: Nuts, fruit, or granola bars can help maintain energy levels.
- Compression stockings: To reduce the risk of DVT.
- Comfortable clothing: Loose and breathable fabrics minimize discomfort.
- Pregnancy-safe medications: For motion sickness, headaches, or digestive issues, as approved by a healthcare provider.
Bringing medical documentation, like a copy of prenatal records and a letter from a doctor, can also be helpful. In case of emergencies, having these on hand can expedite medical care.
Personal Experiences with Flying While Pregnant
Flying while pregnant can be a mixed experience, and every woman’s story is different. For some, the second trimester is a breeze, making travel feel almost normal. Others struggle with swelling, backaches, and the frequent need to use the bathroom. One mom shared how she flew at 28 weeks to visit family and found that simple measures like staying hydrated and moving around the cabin made the journey bearable.
However, another traveler at 34 weeks described feeling anxious and claustrophobic, despite her doctor's reassurance. She emphasized how the tight seating and turbulence heightened her discomfort. These experiences highlight that each pregnancy is unique, and preparation is key.
When to Avoid Air Travel Entirely
Absolute Restrictions
In some cases, flying during pregnancy is strongly discouraged or entirely forbidden. High-risk pregnancies, severe anemia, and uncontrolled preeclampsia are just a few examples where travel poses significant risks. Women with a history of preterm labor or those carrying multiples may also need to reconsider plans, especially if nearing the third trimester.
Airlines may enforce restrictions more strictly if there are obvious signs of distress or complications. Medical advice should always be the guiding factor when deciding whether to travel.
Warning Signs
Any sudden changes in health, such as heavy bleeding, severe headaches, or abdominal pain, should prompt immediate medical attention. Ignoring these signs and flying could result in complications far from proper medical care. Trusting one's instincts and erring on the side of caution is always wise.
Conclusion – How Many Months Pregnant Can You Not Fly
Air travel during pregnancy comes with specific limitations, generally restricting flights beyond the 36th week. Understanding airline policies, medical considerations, and personal health risks can help make an informed decision. While the second trimester is often the safest and most comfortable time to travel, each pregnancy is unique. Consulting with a healthcare provider and planning well in advance ensures the safest and most pleasant journey possible.