To save up to 44% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Flint to Heathrow from $910 1-2 weeks out and tickets from $1,146 for flights departing within the next 72 hours.
October can be a great time to fly to Heathrow from Flint with a flight ticket averaging about $714. Cheapflights users have found deals in the month of October for as cheap as $445. The most expensive prices can be found in the month of July.