IAD - LEX

$146 Find Cheap Flights from Washington Dulles Airport to Lexington - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Lexington departing on 7/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Lexington

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Lexington, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Lexington, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$319
Typical prices: $512-$373
Delta
Thu 7/16Sun 7/19
IAD - LEX • 1 stop
Cheapest one-way
$146
Multiple Airlines
Wed 7/22
IAD - LEX • 1 stop
Top airlines
Cheapest • from $319 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Lexington. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $329 (round-trip)
Shortest trip • 4h 00m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Lexington!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Lexington (IAD-LEX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Lexington that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Lexington

Thu, Jul 16 - Sun, Jul 19
Delta Logo
6:00 am - 10:11 am
IAD
-
LEX
4h 11m
1 stop
Delta Logo
7:59 pm - 12:41 am
LEX
-
IAD
4h 42m
1 stop
$319Delta
Fri, Jul 17 - Fri, Jul 24
American Airlines Logo
5:03 am - 9:11 am
IAD
-
LEX
4h 08m
1 stop
American Airlines Logo
5:00 am - 8:49 am
LEX
-
IAD
3h 49m
1 stop
$320American Airlines
Wed, Jul 15 - Mon, Jul 20
American Airlines Logo
6:33 am - 6:23 pm
IAD
-
LEX
11h 50m
2 stops
American Airlines Logo
8:10 pm - 12:10 am
LEX
-
IAD
4h 00m
1 stop
$324American Airlines
Wed, Jul 8 - Wed, Jul 15
Multiple Airlines Logo
12:28 pm - 8:39 am
IAD
-
LEX
20h 11m
1 stop
Multiple Airlines Logo
12:15 pm - 12:47 pm
LEX
-
IAD
24h 32m
1 stop
$327Multiple Airlines
Fri, Jul 10 - Tue, Jul 14
Delta Logo
5:26 pm - 9:18 pm
IAD
-
LEX
3h 52m
1 stop
Delta Logo
10:51 am - 4:41 pm
LEX
-
IAD
5h 50m
1 stop
$339Delta
Wed, Jul 8 - Wed, Jul 15
American Airlines Logo
1:08 pm - 12:25 am
IAD
-
LEX
11h 17m
2 stops
American Airlines Logo
8:10 pm - 12:10 am
LEX
-
IAD
4h 00m
1 stop
$344American Airlines
Fri, Jul 17 - Fri, Jul 24
Allegiant Air Logo
9:03 pm - 8:39 am
IAD
-
LEX
35h 36m
2 stops
Allegiant Air Logo
5:01 pm - 8:20 pm
LEX
-
IAD
27h 19m
1 stop
$350Allegiant Air
Fri, Jul 3 - Thu, Jul 9
Delta Logo
5:29 pm - 9:19 pm
IAD
-
LEX
3h 50m
1 stop
Delta Logo
3:27 pm - 9:03 pm
LEX
-
IAD
5h 36m
1 stop
$359Delta
Thu, Jul 2 - Tue, Jul 7
American Airlines Logo
6:33 am - 12:34 pm
IAD
-
LEX
6h 01m
1 stop
American Airlines Logo
11:20 am - 7:34 pm
LEX
-
IAD
8h 14m
2 stops
$364American Airlines
Fri, Jul 17 - Fri, Jul 24
Allegiant Air Logo
9:03 pm - 8:39 am
IAD
-
LEX
35h 36m
2 stops
Allegiant Air Logo
5:01 pm - 8:20 pm
LEX
-
IAD
27h 19m
1 stop
$365Allegiant Air
Booking Insights

KAYAK's insights & trends for Dulles Intl to Lexington flights

Get data-powered insights and trends into flights from Dulles Intl to Lexington to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Lexington?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Lexington departing in July.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Lexington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Lexington, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Lexington is March, where tickets cost $0 (return) on average. On the other hand, the most expensive months are April and May, where the average cost of round-trip tickets is $548 and $478 respectively.

Good to know

Low seasonDecember
Cheapest flight$146
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly and prices are also 39% lower on average.
Flight from Washington Dulles Airport to Lexington

When to book flights from Dulles Intl to Lexington

Are your dates flexible? Find out the best times to travel from Dulles Intl to Lexington based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Lexington flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Lexington?

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Lexington was $146 for a one-way ticket and $319 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Lexington?

    A passport is not required to fly from Washington Dulles Airport to Lexington.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Lexington?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Lexington?

    SkyTeam, and oneworld are the airline alliances operating flights between Washington Dulles Airport and Lexington, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Lexington, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Lexington are Delta and American Airlines. With an average price for the route of $358 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $238 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Lexington?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Lexington.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Lexington?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Lexington from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Lexington?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Lexington with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and LEX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Lexington?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Lexington from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Dulles Intl to Lexington

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Lexington. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Lexington? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8396 reviews
7.8Entertainment
7.2Food
8.5Crew
7.8Comfort
8.1Boarding
Airline reviews

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

2.0 MediocreBen, Jun 2026
ATL - HSV
Read more Delta reviews

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

Overall a good experience, however Wifi was not working on the flight.

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Human interaction. Thought there would be more service-even a smile would have been nice.

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

Delays with no explanation. It could have been handled better.

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

Everything you need to know for your flight from Dulles Intl to Lexington

Information on your arrival and departure airports