Cheap flights from Washington, D.C. Dulles Intl Airport to London from £130
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to London departing on 3/8. 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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SWISS flights from Washington, D.C. Dulles Intl Airport to London
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American Airlines flights from Washington, D.C. Dulles Intl Airport to London
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to London
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 typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and London?
What is the cheapest month to fly to London?
The cheapest month to fly to London from Washington, D.C. Dulles Intl Airport is in January. Flight prices, which tend to average around £464, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around £470.
What is the cheapest day to depart on your flight to London?
Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £551. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to London for around £656.
What is the cheapest time of day to depart on your flight to London?
The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £614. Flights at midday are often more expensive, with an average ticket price of £1,432.
What is the cheapest Washington, D.C. Dulles Intl to London flight route?
Fly from Washington, D.C. Dulles Intl to London Gatwick for the best Washington, D.C. Dulles Intl - London flight prices
How far in advance should I book a flight to London?
You are more likely to see cheaper flights to London from Washington, D.C. Dulles Intl Airport when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to London for around £578 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Washington, D.C. Dulles Intl Airport for as low as £542 on momondo.
What cabin class options are available on Washington, D.C. Dulles Intl to London flights?
There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Washington, D.C. Dulles Intl to London?
Icelandair, British Airways, and TAP AIR PORTUGAL are the most popular carriers operating from Washington, D.C. Dulles Intl to London
Which airlines fly to London?
Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to London from Washington, D.C. Dulles Intl Airport according to our data. Virgin Atlantic is the first choice among our users, with 34% of people opting to fly with this airline when travelling to London. Keep in mind that there are 8 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.
How many flights depart from Washington, D.C. Dulles Intl Airport to London on average per day?
22 flights are operational daily from Washington, D.C. Dulles Intl Airport to London as of May 2025. The most popular departure time for this route is 22:00, with 65% of flights per day taking off in the evening.
How many flights depart from Washington, D.C. Dulles Intl Airport to London on average per week?
As of May 2025, there are 155 flights per week flying from Washington, D.C. Dulles Intl Airport to London. The most common day of the week flights depart is Wed, with 18% of flights taking off on this day.
When to book flights from Washington, D.C. Dulles Intl Airport to London
Cheap Washington, D.C. Dulles Intl Airport to London (IAD to LON) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to London
How far is Washington, D.C. Dulles Intl to London by plane?
London is 3677.3 mi away from Washington, D.C. Dulles Intl. In terms of flight time, this usually takes a little over 7h 15m.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to London?
Prices for flights from Washington, D.C. Dulles Intl Airport to London are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to London?
As of May 2025, there are 8 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to London.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to London.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Washington, D.C. Dulles Intl Airport to London?
Based on momondo bookings for flights between Washington, D.C. Dulles Intl Airport and London, the leading plane model is Boeing 777, making up 37.03% of the total bookings. Other popular models include Airbus A380-800 with 18.23%, Boeing 787-8 Dreamliner with 7.92%, and Airbus A330-900neo with 7.84%.
What is the most popular airline from Washington, D.C. Dulles Intl Airport to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to London is British Airways (25% of total bookings). The next most popular airlines are Virgin Atlantic (21%), Iberia (18%), and PLAY (11%).
Best airlines flying from Washington, D.C. Dulles Intl Airport to London
Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £371 | Free Cancellation | Rating 7.0 487 reviews | |||
| PriceFrom £427 | Free Cancellation | Rating 7.4 1,446 reviews | |||
| PriceFrom £437 | Free Cancellation | Rating 7.4 643 reviews | |||
| PriceFrom £449 | Free Cancellation | Rating 6.6 6,846 reviews | |||
| PriceFrom £461 | Free Cancellation | Rating 7.8 1,334 reviews | |||
| PriceFrom £465 | Free Cancellation | Rating 7.0 2,701 reviews | |||
| PriceFrom £494 | Free Cancellation | Rating 6.7 7,045 reviews | |||
| PriceFrom £496 | Free Cancellation | Rating 7.4 8,696 reviews |
KLM Flights From Washington, D.C. Dulles Intl Airport to London
The lowest priced KLM flight from Washington, D.C. Dulles Intl Airport to London from the last 72 hours was £616. Generally, KLM has 3 flights on this route every week with an average price of £795. KLM is rated 7.8/10 by our users.
Air France Flights From Washington, D.C. Dulles Intl Airport to London
Across 1,446 Air France reviews on momondo, the average score is 7.4/10. Air France flies from Washington, D.C. Dulles Intl Airport to London about 3 times each week, with ticket deals ranging from £570 to £725. Price data is based on momondo searches in the last 72 hours.
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Why should I use momondo to find a flight deal from Washington, D.C. to London?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to London. momondo saves you time and could save you money on your trip.
Can I find flights from Washington, D.C. to London with flexible booking policies on momondo?
All flight searches from Washington, D.C. to London on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Washington, D.C. to London?
Once you have performed a search for Washington, D.C. to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Washington, D.C. to London right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to London from Washington, D.C.. 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.