At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Heathrow and Grand Forks for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
In Heathrow, there will be greater rainfall in Heathrow compared to Grand Forks over the next 20 days.
Our data indicates that the weather will be 29 °C on average in the month of July. The temperature in Grand Forks is typically hotter than in Heathrow. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.