How do most travelers feel about United Airlines?

The general consensus from 29 Cheapflights users is that United Airlines is a 6.8/10. Select your travel dates above for updated prices on flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport (IAD-LHR).

In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 1.6 in.

Fly United Airlines from IAD to LHR as low as $429

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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 Heathrow in 2024

Popular in	June
Cheapest in	October
Average price (all airlines)	$851
One-way from	$429
Round-trip from	$609

Highest demand for flights from Washington, D.C. Dulles Intl to London Heathrow; 20% potential price increase.

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Best time to find cheap flights from Washington, D.C. Dulles Intl to London Heathrow; 4% potential price drop.

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

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

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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 Heathrow Airport on United Airlines for under $900?
United Airlines offers 14 flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport for under $900. Prices vary by date and time. To see all prices and select your dates, click here.
How do most travelers feel about United Airlines?
The general consensus from 29 Cheapflights users is that United Airlines is a 6.8/10. Select your travel dates above for updated prices on flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport (IAD-LHR).

Cheapest United Airlines flights from Dulles Intl to Heathrow

Mon 5/206:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Tue 9/248:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Deal found 5/6$624

Pick Dates

Mon 5/206:45 amIAD - LHR

1 stop18h 10mUnited Airlines

Tue 9/248:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Deal found 5/6$628

Pick Dates

Wed 5/86:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Wed 5/291:45 pmLHR - IAD

1 stop31h 30mUnited Airlines

Deal found 5/6$639

Pick Dates

Direct flights from Dulles Intl to Heathrow on United Airlines

Mon 5/2010:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Tue 9/244:40 pmLHR - IAD

Nonstop8h 15mUnited Airlines

Deal found 5/6$640

Pick Dates

Tue 5/2110:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Thu 6/612:15 pmLHR - IAD

Nonstop8h 05mUnited Airlines

Deal found 5/5$655

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Mon 5/206:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Wed 5/294:40 pmLHR - IAD

Nonstop8h 05mUnited Airlines

Deal found 5/6$657

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Last minute deals on Cheapflights

Wed 5/1510:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Fri 5/318:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Deal found 5/6$639

Pick Dates

Wed 5/1512:49 pmIAD - LHR

1 stop12h 06mUnited Airlines

Wed 5/298:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Deal found 5/6$643

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Mon 5/1310:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Tue 6/46:50 amLHR - IAD

1 stop11h 40mUnited Airlines

Deal found 5/5$646

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One-way United Airlines flights to Heathrow from Dulles Intl

Sun 10/66:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 5/5$429

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Wed 9/2512:35 pmIAD - LHR

2 stops16h 25mUnited Airlines

Deal found 5/5$433

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Mon 5/136:30 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 5/6$459

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Average price of United Airlines flights from Dulles Intl to Heathrow

Currently, the most affordable month to book a United Airlines flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport in November, with an average price of $653. Conversely, traveling with United Airlines from Washington, D.C. Dulles Intl Airport to London Heathrow Airport 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 Heathrow 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 Heathrow Airport, 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 Heathrow on another airline
Consider alternative airlines that service the Heathrow area. Flight routes are based on user searches made on Cheapflights and were last updated on May 6, 2024.

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

Virgin Atlantic flights from Washington, D.C. Dulles Intl to London Heathrow

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 6, 2024.

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If Heathrow 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 6, 2024.

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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 6, 2024.

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See what others are saying about United Airlines

United Airlines

7.4

Good

11,090 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 3697

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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 Heathrow in 2024

Find detailed information about United Airlines flights from Dulles Intl to Heathrow. Explore the options provided by United Airlines to plan your journey from Dulles Intl to Heathrow. Data last updated May 6, 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 Heathrow Airport on United Airlines for under $900?

How do most travelers feel about United Airlines?

Cheapest United Airlines flights from Dulles Intl to Heathrow

Direct flights from Dulles Intl to Heathrow on United Airlines

Last minute deals on Cheapflights

One-way United Airlines flights to Heathrow from Dulles Intl

Average price of United Airlines flights from Dulles Intl to Heathrow

Temperature and rainfall in Heathrow by month

Plan your trip to Heathrow 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 Heathrow on another airline
Consider alternative airlines that service the Heathrow area. Flight routes are based on user searches made on Cheapflights and were last updated on May 6, 2024.

Consider alternative airlines that service the Heathrow area. Flight routes are based on user searches made on Cheapflights and were last updated on May 6, 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 6, 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 6, 2024.

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

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

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

Choose from other airlines serving Dulles Intl and Heathrow.

Other popular destinations in Europe
If Heathrow 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 6, 2024.

If Heathrow 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 6, 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 6, 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 6, 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 Heathrow Airport (IAD - LHR)

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 Heathrow in 2024

Find detailed information about United Airlines flights from Dulles Intl to Heathrow. Explore the options provided by United Airlines to plan your journey from Dulles Intl to Heathrow. Data last updated May 6, 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 Heathrow Airport on United Airlines for under $900?

How do most travelers feel about United Airlines?

Cheapest United Airlines flights from Dulles Intl to Heathrow

Direct flights from Dulles Intl to Heathrow on United Airlines

Last minute deals on Cheapflights

One-way United Airlines flights to Heathrow from Dulles Intl

Average price of United Airlines flights from Dulles Intl to Heathrow

Temperature and rainfall in Heathrow by month

Plan your trip to Heathrow 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 Heathrow on another airlineConsider alternative airlines that service the Heathrow area. Flight routes are based on user searches made on Cheapflights and were last updated on May 6, 2024.

Consider alternative airlines that service the Heathrow area. Flight routes are based on user searches made on Cheapflights and were last updated on May 6, 2024.

See what others are saying about United Airlines

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from Dulles Intl to Heathrow on another airline
Consider alternative airlines that service the Heathrow area. Flight routes are based on user searches made on Cheapflights and were last updated on May 6, 2024.