Find flights
Deals
FAQs

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

LHR — IAD
17 Jan — 24 Jan1
1 adult
1 adult, Business, 0 bags

Best travel deals

Find the best flight deals available from hundreds of sites within seconds

Trusted and free

Cheapflights is 100% free to use. No hidden charges!

Book with flexibility

Easily find flight tickets with no change fees

Cheap business class flights to Washington, D.C. Dulles Intl Airport in 2025

Find the latest flights to Washington, D.C. Dulles Intl Airport in 2025, 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 18 December 2025.

Top Rated Airline

Icelandair

No. of Airlines

8
Most popular airline to fly business class with to Dulles Intl in the past 7 days
Search Deals
Airlines that offer business class options for this route
Search Deals

Find business class flight deals to Washington, D.C. Dulles Intl Airport

Enter your travel dates to find the best prices.

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 18 December 2025.

Mon 26/120:35LHR - IAD
1 stop26h 55mIcelandair
Thu 29/119:40IAD - LHR
1 stop10h 10mIcelandair
Deal found 16/12£1,397
Wed 11/212:15LHR - IAD
1 stop11h 15mIcelandair
Sun 22/219:40IAD - LHR
1 stop10h 10mIcelandair
Deal found 16/12£1,410
Thu 15/111:55LGW - IAD
1 stop11h 35mIcelandair
Sat 24/119:40IAD - LGW
1 stop10h 15mIcelandair
Deal found 17/12£1,427
Tue 28/421:25LHR - IAD
1 stop26h 55mIcelandair
Mon 4/520:30IAD - LHR
1 stop10h 25mIcelandair
Deal found 17/12£1,507
Tue 28/421:25LHR - IAD
1 stop26h 55mIcelandair
Fri 1/520:30IAD - LHR
1 stop10h 25mIcelandair
Deal found 17/12£1,533
Mon 26/120:35LHR - IAD
1 stop26h 55mIcelandair
Wed 28/119:40IAD - LHR
1 stop18h 50mIcelandair
Deal found 16/12£1,652

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.

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

Currently, October 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 £989). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of £1,771). 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.

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 18 December 2025.

  • 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: Business Class, Prem Economy 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, October 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 £989). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of £1,771). 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.

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.