IAD - LEX

$165 Find Cheap Flights from Washington Dulles Airport to Lexington

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 3/1. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$279
Overall average: $279
Delta
Thu 3/5Sat 3/7
IAD - LEX • 1 stop
Cheapest one-way
$165
Allegiant Air
Sun 3/1
IAD - LEX • 1 stop
Top airlines
Delta
Cheapest • from $279 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
December
Cheapest • 47% price drop
August
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, Mar 5 - Sat, Mar 7
Delta Logo
7:15 am - 11:50 am
IAD
-
LEX
4h 35m
1 stop
Delta Logo
6:00 am - 11:35 am
LEX
-
IAD
5h 35m
1 stop
$279Delta
Thu, Feb 26 - Mon, Mar 2
Delta Logo
6:00 am - 9:55 am
IAD
-
LEX
3h 55m
1 stop
Delta Logo
5:47 pm - 12:21 am
LEX
-
IAD
6h 34m
1 stop
$319Delta
Wed, Mar 11 - Tue, Mar 24
American Airlines Logo
9:19 am - 2:33 pm
IAD
-
LEX
5h 14m
1 stop
American Airlines Logo
7:00 am - 11:00 am
LEX
-
IAD
4h 00m
1 stop
$339American Airlines
Thu, Mar 12 - Mon, Mar 23
Multiple Airlines Logo
6:30 am - 3:32 pm
IAD
-
LEX
33h 02m
2 stops
Multiple Airlines Logo
9:03 am - 8:34 pm
LEX
-
IAD
11h 31m
1 stop
$343Multiple Airlines
Fri, Mar 6 - Sun, Mar 8
Multiple Airlines Logo
9:12 am - 8:36 pm
IAD
-
LEX
11h 24m
1 stop
Multiple Airlines Logo
9:18 am - 12:31 am
LEX
-
IAD
15h 13m
2 stops
$346Multiple Airlines
Thu, Mar 12 - Sat, Mar 21
Multiple Airlines Logo
6:30 am - 3:32 pm
IAD
-
LEX
33h 02m
2 stops
Multiple Airlines Logo
9:00 am - 7:20 am
LEX
-
IAD
22h 20m
1 stop
$347Multiple Airlines
Thu, Mar 12 - Fri, Mar 20
Multiple Airlines Logo
6:30 am - 3:32 pm
IAD
-
LEX
33h 02m
2 stops
Multiple Airlines Logo
9:03 am - 8:40 pm
LEX
-
IAD
11h 37m
1 stop
$349Multiple Airlines
Thu, Mar 12 - Fri, Mar 20
Multiple Airlines Logo
6:30 am - 3:32 pm
IAD
-
LEX
33h 02m
2 stops
Multiple Airlines Logo
3:39 pm - 7:24 am
LEX
-
IAD
15h 45m
1 stop
$355Multiple Airlines
Fri, Feb 13 - Sun, Feb 15
Delta Logo
6:00 am - 9:55 am
IAD
-
LEX
3h 55m
1 stop
Delta Logo
7:26 am - 11:53 am
LEX
-
IAD
4h 27m
1 stop
$359Delta
Wed, Apr 8 - Sun, Apr 12
American Airlines Logo
6:26 am - 12:41 pm
IAD
-
LEX
6h 15m
1 stop
American Airlines Logo
5:51 pm - 11:59 pm
LEX
-
IAD
6h 08m
1 stop
$369American Airlines
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.

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 December, where tickets cost $218 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $800 and $497 respectively.

Good to know

Low seasonNovember
Cheapest flight$165
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly and prices are also 42% 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 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Lexington was $165 for a one-way ticket and $279 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 $277 and an overall rating of 7.2.

  • 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 8128 reviews
7.2Food
7.8Entertainment
7.9Comfort
8.5Crew
8.1Boarding
Airline reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

2.0 MediocreTodd, Jan 2026
IAH - ATL
Read more Delta reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

delayed due to weather. Could not communicate with family since the wifi was broken

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

We were told the flight was delayed 5 times, then it was moved to the next day.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

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

Information on your arrival and departure airports