Flight Advice During Pregnancy

Flying during pregnancy, especially for any period longer than 3 hours, can increase your risk of thrombosis (blood clots forming in your legs or even lungs). If you cannot avoid flying, we offer the following advice:

  • Please always consult your GP or Obstetrician before booking any flights (especially long haul). Fit to Fly letters can be supplied by us upon request.
  • Ask your local GP or Obstetrician to prescribe Aspirin 75mg. Please do not use medication you have bought over the counter as the dose could be incorrect.
  • The Aspirin should be taken according to the instructions given to you by your GP or Obstetrician, but the usual recommendation is to take one dose the day before your flight, one on the actual day of your flight and one on the day after.
  • You may also find the use of compression stockings or socks to be beneficial as these will help to keep the blood moving in your legs.
  • During your flight, ensure that you stretch your legs and walk around whenever possible.
  • Maintain your fluid intake throughout your flight.

About Dr Duncan Birth

Dr Keith Duncan MD FRCOG is a leading consultant obstetrician and gynaecologist based in London. With over 30 years experience, Dr Duncan has delivered more than 4,000 babies both in the NHS and as a private obstetrician. His areas of expertise include childbirth, caesarean, antenatal care, multiple pregnancies, ultrasound and high-risk pregnancies.

Contact

Our secretary is Colette.

She can be contacted by email at secretary@drduncanbirth.co.uk or by telephone via 0207 3495 204

Locations

Clinics

The Portland Hospital Consulting Suite
3rd Floor, 212 Great Portland Street, London, W1W 5QN

Ovara Health
274 Fulham Road, Chelsea Walk, London, SW10 9EW

132 Harley Street
London, W1G 7JX

Hospital

The Portland Hospital
205-209 Great Portland Street, London, W1W 5AH

How I Can Help

© 2025 Dr Duncan Birth | All rights reserved