$705 Cheap TAP Portugal flights London (LHR) to Washington (IAD)

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$705 Cheap TAP Portugal flights London (LHR) to Washington (IAD)

Prices were available within the past 7 days and start at $705 for one-way flights and $551 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Sun, Mar 8 - Mon, Mar 16
LHR
London
IAD
Washington
$551 Roundtrip, found 16 hours ago
$551
Roundtrip
found 16 hours ago
Select TAP Portugal flight, departing Sun, Mar 8 from London to Washington, returning Mon, Mar 16, priced at $551 found 16 hours ago
TAP Portugal
Wed, Mar 4 - Sun, Mar 8
LHR
London
IAD
Washington
$552 Roundtrip, just found
$552
Roundtrip
just found
Select TAP Portugal flight, departing Wed, Mar 4 from London to Washington, returning Sun, Mar 8, priced at $552 just found
TAP Portugal
Tue, Mar 17 - Tue, Mar 31
LHR
London
IAD
Washington
$556 Roundtrip, found 3 days ago
$556
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Tue, Mar 17 from London to Washington, returning Tue, Mar 31, priced at $556 found 3 days ago
TAP Portugal
Wed, Mar 4 - Sun, Mar 8
LHR
London
IAD
Washington
$560 Roundtrip, just found
$560
Roundtrip
just found
Select TAP Portugal flight, departing Wed, Mar 4 from London to Washington, returning Sun, Mar 8, priced at $560 just found
TAP Portugal
Sun, Jan 18 - Sun, Feb 15
LHR
London
IAD
Washington
$565 Roundtrip, found 2 days ago
$565
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Sun, Jan 18 from London to Washington, returning Sun, Feb 15, priced at $565 found 2 days ago
TAP Portugal
Sat, May 2 - Sat, May 9
LHR
London
IAD
Washington
$566 Roundtrip, found 6 days ago
$566
Roundtrip
found 6 days ago
Select TAP Portugal flight, departing Sat, May 2 from London to Washington, returning Sat, May 9, priced at $566 found 6 days ago
TAP Portugal
Fri, Apr 17 - Sat, Apr 25
LHR
London
IAD
Washington
$568 Roundtrip, found 3 hours ago
$568
Roundtrip
found 3 hours ago
Select TAP Portugal flight, departing Fri, Apr 17 from London to Washington, returning Sat, Apr 25, priced at $568 found 3 hours ago
TAP Portugal
Sat, May 2 - Sat, May 9
LHR
London
IAD
Washington
$573 Roundtrip, found 6 days ago
$573
Roundtrip
found 6 days ago
Select TAP Portugal flight, departing Sat, May 2 from London to Washington, returning Sat, May 9, priced at $573 found 6 days ago
TAP Portugal
Fri, Apr 17 - Sat, Apr 25
LHR
London
IAD
Washington
$576 Roundtrip, found 3 hours ago
$576
Roundtrip
found 3 hours ago
Select TAP Portugal flight, departing Fri, Apr 17 from London to Washington, returning Sat, Apr 25, priced at $576 found 3 hours ago
TAP Portugal
Sat, May 2 - Sat, May 9
LHR
London
IAD
Washington
$581 Roundtrip, found 6 days ago
$581
Roundtrip
found 6 days ago
Select TAP Portugal flight, departing Sat, May 2 from London to Washington, returning Sat, May 9, priced at $581 found 6 days ago
TAP Portugal
Sat, Apr 11 - Sat, Apr 18
LHR
London
IAD
Washington
$581 Roundtrip, found 2 days ago
$581
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Sat, Apr 11 from London to Washington, returning Sat, Apr 18, priced at $581 found 2 days ago
Flights from London (LHR) to Washington (IAD)
Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
British Airways
Distance
3666 mi
Average flight time
3 hours 14 mins

Frequently asked questions

How much is a TAP Portugal flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
You'll discover affordable round-trip TAP Portugal flights from $551 from LHR to IAD by organizing your results from "Price (lowest to highest)" on Expedia. Or look for deals from $705 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from LHR to IAD with TAP Portugal?
January is one of the most affordable months to get away to Washington with TAP Portugal. You could also find excellent prices on one-way and round-trip tickets in February.
What is the cheapest time to book flights from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD) with TAP Portugal?
Search for TAP Portugal flights from LHR to IAD about one month before you want to go. The most affordable time to reserve an international flight is generally 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. Regardless of fare class or itinerary, the best day to book international airfare is usually Sunday. Friday can be the most expensive. Passengers who book on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does TAP Portugal fly nonstop from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Click on the "Nonstop" filter when searching for direct TAP Portugal flights from LHR to IAD. It's also a great way to compare other carriers servicing the same nonstop journey.
What is the earliest TAP Portugal flight from LHR to IAD?
Sort your results by "Early Morning" and "Morning" to browse the earliest departures from LHR to IAD. Heading off early means you're 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does TAP Portugal fly into in Washington?
Board a TAP Portugal flight from Heathrow Airport (LHR) to Washington, and you'll likely touch down at Washington Dulles Intl. Airport (IAD). This is the airline's primary hub in this destination.
What kind of luggage can I take on a TAP Portugal flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
TAP Portugal lets travelers bring 2 checked-in bags weighing up to 50 lb with maximum dimensions of 62 inches on standard economy flights from LHR to IAD. Additionally, you can bring 1 cabin bag with you in the cabin. This carry-on luggage must not exceed 45 inches and be no heavier than 17 lb. Baggage rules can vary depending on your cabin class and fare type, so double-check your booking or TAP Portugal's website to avoid any extra fees at the airport.
Can I change or cancel my TAP Portugal flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Changes are often free within 24 hours of making a booking, but your airline may add a charge after that time. For further information about modifying your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to make changes without being charged, check the "No cancel fee" or "Changes included" filter when organizing your trip.

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