How do most travelers feel about United Airlines?

United Airlines has received a 6.8/10 rating from 29 Cheapflights user reviews. If you wish to plan your next trip from Washington, D.C. Dulles Intl Airport to London with United Airlines, enter your preferred travel dates above!

Can I get a flight from Washington, D.C. Dulles Intl Airport to London on United Airlines for under $900?

Cheapflights currently has 14 IAD-LON flights for under $900. Flights to London will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to London with United Airlines?

Booking with United Airlines 11 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to London with United Airlines?

Currently, the most affordable month to book a United Airlines flight from Washington, D.C. Dulles Intl Airport to London in November, with an average price of $652. Conversely, traveling with United Airlines from Washington, D.C. Dulles Intl Airport to London in June will be the most expensive, with an average cost of $1,114. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Fly United Airlines from IAD to London as low as $414

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Cheapflights users flying from Washington, D.C. to London on United Airlines typically fly into London Heathrow and depart from Washington, D.C. Dulles Intl. Select your dates above for pricing.

United Airlines flights from Dulles Intl to London in 2024

Popular in	June
Cheapest in	January
Average price (all airlines)	$801
One-way from	$414
Round-trip from	$570

Highest demand for flights from Washington, D.C. Dulles Intl to London; 18% potential price increase.

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Best time to find cheap flights from Washington, D.C. Dulles Intl to London; 3% potential price drop.

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Average price for all Washington, D.C. Dulles Intl to London flights (one-way and round-trip).

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Cheapest one-way United Airlines flight from Washington, D.C. Dulles Intl to London

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Cheapest round-trip United Airlines flight from Washington, D.C. Dulles Intl to London

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Can I get a flight from Washington, D.C. Dulles Intl Airport to London on United Airlines for under $900?
Cheapflights currently has 14 IAD-LON flights for under $900. Flights to London will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.
How do most travelers feel about United Airlines?
United Airlines has received a 6.8/10 rating from 29 Cheapflights user reviews. If you wish to plan your next trip from Washington, D.C. Dulles Intl Airport to London with United Airlines, enter your preferred travel dates above!

Cheapest United Airlines flights from Dulles Intl to London

Wed 6/125:33 pmIAD - LHR

1 stop11h 37mUnited Airlines

Wed 6/198:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Deal found 5/29$863

Pick Dates

Wed 6/126:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Tue 6/1812:15 pmLHR - IAD

Nonstop8h 05mUnited Airlines

Deal found 5/29$875

Pick Dates

Wed 6/128:32 amIAD - LHR

1 stop16h 23mUnited Airlines

Wed 6/194:40 pmLHR - IAD

Nonstop8h 05mUnited Airlines

Deal found 5/29$880

Pick Dates

Direct flights from Dulles Intl to London on United Airlines

Wed 8/146:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Tue 8/2712:15 pmLHR - IAD

Nonstop8h 05mUnited Airlines

Deal found 5/29$638

Pick Dates

Wed 8/146:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Tue 8/274:40 pmLHR - IAD

Nonstop8h 05mUnited Airlines

Deal found 5/30$639

Pick Dates

Wed 8/146:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Sat 12/712:05 pmLHR - IAD

Nonstop8h 40mUnited Airlines

Deal found 5/29$688

Pick Dates

Last minute deals on Cheapflights

Fri 6/710:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Sun 6/96:50 amLHR - IAD

1 stop12h 25mUnited Airlines

Deal found 5/30$1,029

Pick Dates

Fri 6/71:05 pmIAD - LHR

1 stop17h 40mUnited Airlines

Sun 6/96:50 amLHR - IAD

1 stop12h 25mUnited Airlines

Deal found 5/30$1,033

Pick Dates

Thu 6/610:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Thu 6/138:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Deal found 5/30$1,073

Pick Dates

One-way United Airlines flights to London from Dulles Intl

Mon 7/86:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 5/30$414

Pick Dates

Mon 7/810:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 5/30$427

Pick Dates

Wed 7/1710:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 5/30$429

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Best time to book a flight from Dulles Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from Dulles Intl with our price prediction graph.

Estimated round-trip price

Temperature and rainfall in London by month

LON Temperature	39.2 - 62.6 °F

LON

Temperature

39.2 - 62.6 °F

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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Fly from Dulles Intl to London on another airline
Consider alternative airlines that service the London area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

British Airways flights from Washington, D.C. Dulles Intl to London

Other United Airlines flights from Dulles Intl
Browse through other United Airlines flights departing from Dulles Intl. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

United Airlines flights from Dulles Intl to Los Angeles

United Airlines flights from Dulles Intl to Heathrow

United Airlines flights from Dulles Intl to London

United Airlines flights from Dulles Intl to Dublin

Complete your trip
Complete your trip to London by adding a car rental and/or hotel reservation to your travel itinerary.

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Other popular destinations in Europe
If London is not for you, choose from these other destinations located in Europe. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

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Flights to Frankfurt am Main

Popular flights with United Airlines
Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 30, 2024.

United Airlines flights from Dulles Intl to Los Angeles

United Airlines flights from Dulles Intl to London

United Airlines flights from Dulles Intl to Heathrow

United Airlines flights from Dulles Intl to Los Angeles

See what others are saying about United Airlines

United Airlines

7.4

Good

10,777 reviews

Check prices

Overview

Recent reviews

8.0

Very good|Mar 2022

Just a normal flight - all was just fine and reasonably comfortable given the physical limitations of flight - arrived safe and on time which are the important things. The only thing that could have been better - that was controllable - was the food - I am always amazed that it can get worse than it was before but United seems to have experts in this area and they should be commended on continuing to make the food worse when it seemed like it as as bad as it could get while using actual food as inputs. I'm guessing we are pretty close to rock bottom by now but United always seems be able to give that extra effort to eliminate that last little bit of remaining quality and taste. I would recommend that United stop having their accountants plan and prepare meals and snacks and let actual chefs, or at least cooks prepare them in the future.

6.0

Okay|Apr 2024

The staff were pleasant. There was no food or entertainment.

2.0

Poor|Nov 2021

Clear attendant at the Logan airport was awful. Rude and inconsiderate to everyone. Let every clear customer in front of every priority United customer. Usually they switch off groups but we were waiting 30 minutes when we were third from the front because every clear customer was let in front of us.

8.0

Very good|Jan 2022

Everything was great. Even though the flight got delayed 10 minutes we arrived on time

5.9

Fair|Aug 2021

Boarding was too long. The Seats are too thin. The snacks were water and a cookie.

1 out of 3593

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Cheapflights users flying from Washington, D.C. to London on United Airlines typically fly into London Heathrow and depart from Washington, D.C. Dulles Intl. Select your dates above for pricing.

United Airlines flights from Dulles Intl to London in 2024

Find detailed information about United Airlines flights from Dulles Intl to London. Explore the options provided by United Airlines to plan your journey from Dulles Intl to London. Data last updated May 30, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Washington, D.C. Dulles Intl Airport to London on United Airlines for under $900?

How do most travelers feel about United Airlines?

Cheapest United Airlines flights from Dulles Intl to London

Direct flights from Dulles Intl to London on United Airlines

Last minute deals on Cheapflights

One-way United Airlines flights to London from Dulles Intl

Best time to book a flight from Dulles Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from Dulles Intl with our price prediction graph.

Temperature and rainfall in London by month

Plan your trip to London by taking into account the average temperature and rainfall totals by month.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Dulles Intl to London on another airline
Consider alternative airlines that service the London area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Consider alternative airlines that service the London area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Other United Airlines flights from Dulles Intl
Browse through other United Airlines flights departing from Dulles Intl. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Browse through other United Airlines flights departing from Dulles Intl. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Complete your trip
Complete your trip to London by adding a car rental and/or hotel reservation to your travel itinerary.

Complete your trip to London by adding a car rental and/or hotel reservation to your travel itinerary.

Other airlines servicing Dulles Intl and London
Choose from other airlines serving Dulles Intl and London.

Choose from other airlines serving Dulles Intl and London.

Other popular destinations in Europe
If London is not for you, choose from these other destinations located in Europe. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

If London is not for you, choose from these other destinations located in Europe. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Popular flights with United Airlines
Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 30, 2024.

See what others are saying about United Airlines

Overview

Recent reviews

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Flights

United Airlines flights from Washington, D.C. Dulles Intl Airport to London (IAD - LON)

Cheapflights users flying from Washington, D.C. to London on United Airlines typically fly into London Heathrow and depart from Washington, D.C. Dulles Intl. Select your dates above for pricing.

United Airlines flights from Dulles Intl to London in 2024

Find detailed information about United Airlines flights from Dulles Intl to London. Explore the options provided by United Airlines to plan your journey from Dulles Intl to London. Data last updated May 30, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Washington, D.C. Dulles Intl Airport to London on United Airlines for under $900?

How do most travelers feel about United Airlines?

Cheapest United Airlines flights from Dulles Intl to London

Direct flights from Dulles Intl to London on United Airlines

Last minute deals on Cheapflights

One-way United Airlines flights to London from Dulles Intl

Best time to book a flight from Dulles Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from Dulles Intl with our price prediction graph.

Temperature and rainfall in London by month

Plan your trip to London by taking into account the average temperature and rainfall totals by month.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Dulles Intl to London on another airlineConsider alternative airlines that service the London area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Consider alternative airlines that service the London area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

See what others are saying about United Airlines

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from Dulles Intl to London on another airline
Consider alternative airlines that service the London area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.