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Cheap Business Class flights to Washington, D.C. Dulles Intl Airport

LHR — IAD
18 Jun — 25 Jun1
1 adult
1 adult, Business, 0 bags

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Cheap business class flights to Washington, D.C. Dulles Intl Airport in 2026

Find the latest flights to Washington, D.C. Dulles Intl Airport in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data were last updated on 19 May 2026.

Average Price

£585

Cheapest Price

£573

Top Rated Airline

Icelandair

No. of Airlines

8
Average for return business class flights in May 2026
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The lowest price for a business class flight ticket to Dulles Intl
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Most popular airline to fly business class with to Dulles Intl in the past 7 days
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Cheapest business class flights to Dulles Intl
Explore the most affordable business class flight options available to Dulles Intl. Find the lowest fares based on data from user searches, with prices last updated on 19 May 2026.

Fri 2/1013:05
LHR
-
IAD
1 stop11h 15m
Icelandair
Sun 11/1023:20
IAD
-
LHR
1 stop16h 00m
Icelandair
Deal found 18/5£1,555
Wed 17/615:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 15/723:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 15/5£1,619
Wed 12/813:05
LHR
-
IAD
1 stop11h 15m
Icelandair
Mon 17/820:30
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 14/5£1,630
Sat 12/915:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Tue 22/923:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 18/5£1,635
Tue 16/613:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Wed 15/723:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 15/5£1,636
Tue 16/613:05
LHR
-
IAD
1 stop11h 15m
Icelandair
Wed 15/723:20
IAD
-
LHR
1 stop16h 00m
Icelandair
Deal found 15/5£1,637

Travel insights for business class flights from United Kingdom to Dulles Intl

Get recent, data-driven insights about business class flights from United Kingdom to Dulles Intl including ideal travel times, pricing trends, and more.

Which month is the cheapest to fly Business Class from the United Kingdom to Washington, D.C. Dulles Intl Airport?

For Business Class flights, the cheapest month to fly this route is November. The most expensive months are January and May.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Frequently asked questions about Washington, D.C. Dulles Intl Airport business class tickets

Find answers to common questions related to Business Class tickets for flights to Washington, D.C. Dulles Intl Airport. Get information on booking, amenities, upgrade options, and more. This FAQ section was last updated on 19 May 2026.

  • What is the cheapest price for a Business Class ticket to Washington, D.C. Dulles Intl Airport?

    If you are flexible with your travel dates and origin, you might only have to pay £573 for a Business Class class flight to Washington, D.C. Dulles Intl Airport (lowest price found recently). Our data shows that the average price for a Business Class ticket to Washington, D.C. Dulles Intl Airport is about £585/traveller.

  • How many premium cabins does Finnair have for flights to Washington, D.C. Dulles Intl Airport?

    Finnair has 3 premium cabins on its schedule for flights to Washington, D.C. Dulles Intl Airport: Prem Economy Class, Business Class and First Class. If you prefer to see more cabin class options, you can try switching up different departure and/or arrival dates.

  • What is the cheapest month to book a Business Class flight from United Kingdom to Washington, D.C. Dulles Intl Airport?

    Currently, November is the cheapest month in which you can book a Business Class flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of £1,979). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of £5,020). There are several factors that can impact the price of a flight, so comparing airlines, departure airports, and flight times can provide users with more options.

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