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 $700?

Cheapflights currently has 13 IAD-LON flights for under $700. 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.

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 $429

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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	February
Average price (all airlines)	$667
One-way from	$429
Round-trip from	$609

Highest demand for flights from Washington, D.C. Dulles Intl to London; 13% potential price increase.

Search Deals

Best time to find cheap flights from Washington, D.C. Dulles Intl to London; 2% potential price drop.

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Can I get a flight from Washington, D.C. Dulles Intl Airport to London on United Airlines for under $700?
Cheapflights currently has 13 IAD-LON flights for under $700. 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 5/88:16 amIAD - LHR

1 stop17h 14mUnited Airlines

Wed 5/2212:05 pmLHR - IAD

1 stop33h 10mUnited Airlines

Deal found 5/4$639

Pick Dates

Sun 5/1912:46 pmIAD - LHR

1 stop12h 09mUnited Airlines

Tue 5/288:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Deal found 5/4$642

Pick Dates

Wed 5/1512:49 pmIAD - LHR

1 stop14h 41mUnited Airlines

Fri 5/318:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Deal found 5/4$643

Pick Dates

Direct flights from Dulles Intl to London on United Airlines

Wed 10/210:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Thu 10/1012:15 pmLHR - IAD

Nonstop8h 15mUnited Airlines

Deal found 5/3$625

Pick Dates

Sun 8/256:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Tue 9/34:40 pmLHR - IAD

Nonstop8h 15mUnited Airlines

Deal found 5/4$640

Pick Dates

Mon 9/1610:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Tue 10/14:40 pmLHR - IAD

Nonstop8h 15mUnited Airlines

Deal found 5/3$648

Pick Dates

Last minute deals on Cheapflights

Mon 5/138:16 amIAD - LHR

1 stop20h 44mUnited Airlines

Wed 5/2912:05 pmLHR - IAD

1 stop33h 10mUnited Airlines

Deal found 5/4$639

Pick Dates

Tue 5/1410:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Thu 6/66:50 amLHR - IAD

1 stop11h 40mUnited Airlines

Deal found 5/4$646

Pick Dates

Mon 5/1310:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Thu 6/64:40 pmLHR - IAD

Nonstop8h 05mUnited Airlines

Deal found 5/4$655

Pick Dates

One-way United Airlines flights to London from Dulles Intl

Sun 9/2210:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 5/4$429

Pick Dates

Wed 9/258:20 amIAD - LHR

2 stops17h 10mUnited Airlines

Deal found 5/3$433

Pick Dates

Mon 5/138:16 amIAD - LHR

1 stop20h 44mUnited Airlines

Deal found 5/3$459

Pick Dates

Average price of United Airlines flights from Dulles Intl to London

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 $653. 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 $1,165. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

January

$674

February

$663

March

$715

April

$692

May

$738

June

$1,165

July

$984

August

$777

September

$746

October

$711

November

$653

December

$672

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).

Browse thousands of different 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 4, 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 4, 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.

London car rentals

London Heathrow Airport car rentals

London Gatwick Airport car rentals

London Stansted Airport car rentals

London Luton Airport car rentals

London City Airport car rentals

London Southend Airport car rentals

Manchester car rentals

Reading car rentals

Oxford car rentals

Liverpool car rentals

Leeds car rentals

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

American Airlines flights

Air Canada flights

Air France flights

Finnair flights

British Airways flights

Austrian Airlines flights

Scandinavian Airlines flights

Singapore Airlines flights

TAP AIR PORTUGAL flights

United Airlines flights

Virgin Atlantic flights

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 4, 2024.

Flights to Manchester

Flights to Madrid

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 4, 2024.

United Airlines flights from Los Angeles to Honolulu

United Airlines flights from Los Angeles to Cancún

United Airlines flights from Newark to Las Vegas

United Airlines flights from San Francisco to Honolulu

United Airlines flights from Newark to Orlando

United Airlines flights from San Francisco to Cancún

United Airlines flights from Newark to Tampa

United Airlines flights from Los Angeles to Tokyo

United Airlines flights from Newark to Los Angeles

United Airlines flights from Newark to Cancún

United Airlines flights from Newark to Miami

United Airlines flights from Washington, D.C. to Los Angeles

United Airlines flights from Newark to Fort Lauderdale

United Airlines flights from Boston to Denver

United Airlines flights from Newark to Luis Munoz Marin Intl

United Airlines flights from Newark to West Palm Beach

United Airlines flights from Newark to Santiago de los Caballeros

United Airlines flights from Los Angeles to New York

United Airlines flights from New York to Los Angeles

United Airlines flights from New York to Las Vegas

United Airlines flights from Boston to San Francisco

United Airlines flights from Washington, D.C. to San Francisco

United Airlines flights from Newark to San Francisco

United Airlines flights from Newark to Santo Domingo

United Airlines flights from Newark to Oranjestad

United Airlines flights from Los Angeles to Newark

United Airlines flights from Newark to Denver

United Airlines flights from Los Angeles to Denver

United Airlines flights from Newark to Fort Myers

United Airlines flights from Los Angeles to San Francisco

See what others are saying about United Airlines

United Airlines

7.3

Good

11,125 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.

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.

6.0

Okay|Mar 2022

Better seating

1 out of 3709

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

View all available airlines

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 4, 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 $700?

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

Average price of United Airlines flights from Dulles Intl to London

Plan your United Airlines flight from Dulles Intl to London by taking into account the cheapest months to travel. The average price of a one-way United Airlines flight from Dulles Intl to London is currently $440 while a round-trip flight costs $638. Price data was last updated on April 28, 2024.

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 4, 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 4, 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 4, 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 4, 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 4, 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 4, 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 4, 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 4, 2024.

See what others are saying about United Airlines

Overview

Recent reviews

100% Free

Book with Flexibility

Travel Smart

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 4, 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 $700?

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

Average price of United Airlines flights from Dulles Intl to London

Plan your United Airlines flight from Dulles Intl to London by taking into account the cheapest months to travel. The average price of a one-way United Airlines flight from Dulles Intl to London is currently $440 while a round-trip flight costs $638. Price data was last updated on April 28, 2024.

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 4, 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 4, 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 4, 2024.