Cheap flights from London to Washington from £229
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Washington departing on 20/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from London to State of Washington
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to State of Washington?
If you aren’t able to travel to State of Washington during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of £481.
What is the cheapest day to depart on your flight to State of Washington?
The cheapest day to depart from London to State of Washington is on a Tuesday. Travellers who choose to depart for State of Washington on a Tuesday will often find tickets for as low as £587. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to State of Washington on Sunday is £711.
What is the cheapest time of day to depart on your flight to State of Washington?
Flying to State of Washington from London in the evening is the least expensive time of day to depart. momondo users have found prices as low as £511 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to State of Washington is in the morning when prices are around £633.
What is the cheapest London to Washington flight route?
Fly from London Heathrow to Seattle/Tacoma Intl for the best London - Washington flight prices
How far in advance should I book a flight to State of Washington?
You are more likely to see cheaper flights to State of Washington from London when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around £570 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from London for as low as £512 on momondo.
What cabin class options are available on London to Washington flights?
There are 4 cabin classes available to choose from on London to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from London to State of Washington on average per day?
The number of flights available between London and State of Washington is 26 per day as of July 2025. The most frequent departure time is 16:00, with 70% of daily flights leaving in the afternoon.
How many flights depart from London to State of Washington on average per week?
The number of flights available between London and State of Washington is 186 per week as of July 2025. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.
Cheap London to State of Washington flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to State of Washington
Best price found | £229 |
|---|---|
Fastest flight time | 9h 55m |
Direct flights | Every day |
Airports in State of Washington | 2 airports |
When did momondo last update prices for flights from London to Washington?
Prices for flights from London to Washington are refreshed on a daily basis.
How many operators does momondo search for flights from London to Washington?
As of July 2025, there are 14 operators available to choose from for flights from London to Washington.
How old do you have to be to fly from London to Washington?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to State of Washington?
momondo data reveals that the most frequently booked plane model on the route from London to State of Washington is Airbus A330-900neo, representing 25.70% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 24.14%, Boeing 777-300ER at 15.69%, and Boeing 787-9 Dreamliner at 9.90%.
Best airlines flying from London to State of Washington
Compare and see reviews for airlines that fly from London to State of Washington with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £7 | Free Cancellation | Rating 7.1 1,144 reviews | |||
| PriceFrom £320 | Free Cancellation | Rating 7.0 514 reviews | |||
| PriceFrom £379 | Free Cancellation | Rating 7.5 1,465 reviews | |||
| PriceFrom £385 | Free Cancellation | Rating 6.8 7,207 reviews | |||
| PriceFrom £386 | Free Cancellation | Rating 7.4 8,844 reviews | |||
| PriceFrom £397 | Free Cancellation | Rating 7.6 1,306 reviews | |||
| PriceFrom £400 | Free Cancellation | Rating 7.8 1,367 reviews | |||
| PriceFrom £414 | Free Cancellation | Rating 7.1 9,681 reviews | |||
| PriceFrom £418 | Free Cancellation | Rating 6.6 7,093 reviews | |||
| PriceFrom £435 | Free Cancellation | Rating 7.4 654 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Washington?
Finding the right flight to Washington from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.
Can I find flights from London to Washington with flexible booking policies on momondo?
Flights from London to Washington with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to Washington?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Washington.
I’m not ready to book a flight from London to Washington right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Washington from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.