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London (LHR) to Washington D.C. (IAD)

Good deals for this route are priced below $690.

The cheapest round trip flights from London (LHR) to Washington D.C. (IAD) for any dates in the next six months were priced from about $670-750 (with stops) and $730-780 (nonstop). A few lucky people found prices as low as $530.

See what people are shopping right now from London (LHR) to Washington D.C. (IAD)

Cheapest time to go

Late January

Lowest fares can be found late January. Highest fares are late November.

$482 — $1320

Fly out on a Wednesday, return on a Monday, save up to $100.

The best day to depart a roundtrip ticket from London to Washington D.C. is Wednesday, saving up to $60. The best day to return is Monday, saving up to $40.

Demand is stable, Prices are flat.

The average demand fell -9.4% to 13,699 flight searches per day compared to 15,118 daily searches during the previous week. Last week's weighted average round-trip ticket price from London to Washington D.C. increased by 3.0% to $690 as compared to $670 the prior week.

Icelandair, Aer Lingus, and Virgin Atlantic have the lowest fares

The most popular deals on airlines that fly direct to Washington D.C. are:

United $720 Find
Lufthansa $730 Find
Austrian Airlines $740 Find

The most popular deals on airlines that fly with stops to Washington D.C. are:

Icelandair $500 Find
Aer Lingus $560 Find
United $710 Find
Lufthansa $720 Find
Virgin Atlantic $813 Find

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Consider these Alternate Airports

Instead of departing from London (LHR) , consider:


Instead of flying to Washington D.C. (IAD) , consider:

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Data and Methodology

This report is based on 2,971,481 round-trip flight prices from crowd-sourced airfare searches made between November 17, 2017 and November 24, 2017. We’ve included all trips that were shops less than 6 months before the departure that include a Saturday night stay.

Our data is drawn from Hopper’s combined feed of Global Distribution System (GDS) data sources which includes about 10 million flight price queries per day, containing about one billion individual trips per day. Demand is represented as the number of queries not actual ticket purchases, and is calibrated across all GDS sources for each market. Lowest fare, or deal fare, is represented by the 10th percentile prices. For example if the 10th percentile price is $800 dollars it means that only 10% of trips are priced at or below this price.

Prices and popularity by date are determined by aggregating all flights that depart before and return after the date in question. Prices by date are 10th percentile prices of such flights. Popularity by date factors out the overall advance purchase distribution, as search rates naturally increase close to departure, in order to highlight long term patterns.

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