$102+ Cheap flights from LaGuardia, NY (LGA) to Dulles Intl (IAD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — IAD
Oct 16 — Oct 231
Round-trip
1 adult, Economy
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Find cheap flights from LaGuardia to Dulles Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from LaGuardia to Dulles Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from LaGuardia to Dulles IntlExplore the most affordable flight options available from LaGuardia to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2026.
Explore the most affordable flight options available from LaGuardia to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:30 pm -
1 stop23h 42m
Sat 10/317:52 am -
1 stop8h 09m
Deal found 9/11![Frontier logo]()
$145
This deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am -
Nonstop1h 23m
Wed 9/1612:40 pm -
Nonstop1h 29m
Deal found 9/15![United Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/149:29 am -
1 stop7h 43m
Mon 11/169:06 pm -
1 stop18h 55m
Deal found 9/11![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:30 pm -
1 stop6h 13m
Wed 11/48:05 am -
1 stop7h 56m
Deal found 9/13![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Fri 10/169:06 pm -
1 stop23h 53m
Deal found 9/11![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:30 am -
1 stop10h 42m
Tue 11/38:05 am -
1 stop7h 56m
Deal found 9/12![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:10 am -
1 stop11h 03m
Tue 10/279:06 pm -
1 stop11h 28m
Deal found 9/11![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Mon 11/29:06 pm -
1 stop11h 28m
Deal found 9/14![Frontier logo]()
$215
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Tue 10/207:50 am -
1 stop8h 24m
Deal found 9/14![Frontier logo]()
$219
This Expedia deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Wed 10/217:50 am -
1 stop8h 24m
Deal found 9/14![Frontier logo]()
$220
Best flights from LaGuardia to Dulles IntlDiscover carefully curated flight deals from LaGuardia to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2026.
Discover carefully curated flight deals from LaGuardia to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2026.
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:00 am -
Nonstop1h 23m
Sun 10/1110:10 pm -
Nonstop1h 20m
Deal found 9/15![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:00 am -
Nonstop1h 23m
Wed 10/2110:10 pm -
Nonstop1h 20m
Deal found 9/15![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:00 am -
Nonstop1h 22m
Sun 11/88:15 am -
Nonstop1h 28m
Deal found 9/13![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:25 am -
Nonstop1h 30m
Mon 10/1910:10 pm -
Nonstop1h 20m
Deal found 9/14![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:00 am -
Nonstop1h 23m
Sat 11/2112:45 pm -
Nonstop1h 30m
Deal found 9/12![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/226:00 am -
Nonstop1h 22m
Sat 11/2810:10 pm -
Nonstop1h 24m
Deal found 9/13![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2510:29 am -
Nonstop1h 26m
Tue 12/2912:48 pm -
Nonstop1h 30m
Deal found 9/13![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:00 am -
Nonstop1h 23m
Sun 10/410:10 pm -
Nonstop1h 20m
Deal found 9/11![United Airlines logo]()
$301
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:00 am -
Nonstop1h 23m
Sun 10/48:20 am -
Nonstop1h 24m
Deal found 9/15![United Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:25 am -
Nonstop1h 30m
Sun 10/48:20 am -
Nonstop1h 24m
Deal found 9/13![United Airlines logo]()
$313
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
Nonstop1h 23m
Mon 10/265:15 pm -
Nonstop1h 30m
Deal found 9/15![United Airlines logo]()
$318
Last-minute flights from LaGuardia to Dulles IntlDiscover last-minute flight deals from LaGuardia to Dulles Intl. Data last updated September 16, 2026 and is based on user searches.
Discover last-minute flight deals from LaGuardia to Dulles Intl. Data last updated September 16, 2026 and is based on user searches.
This deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am -
Nonstop1h 23m
Wed 9/1612:40 pm -
Nonstop1h 29m
Deal found 9/15![United Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Fri 10/169:06 pm -
1 stop23h 53m
Deal found 9/11![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Mon 11/29:06 pm -
1 stop11h 28m
Deal found 9/14![Frontier logo]()
$215
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Tue 10/207:50 am -
1 stop8h 24m
Deal found 9/14![Frontier logo]()
$219
This Expedia deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Wed 10/217:50 am -
1 stop8h 24m
Deal found 9/14![Frontier logo]()
$220
This Frontier deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:10 am -
1 stop11h 03m
Tue 10/279:06 pm -
1 stop11h 28m
Deal found 9/11![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:30 pm -
1 stop23h 42m
Sat 10/317:52 am -
1 stop8h 09m
Deal found 9/11![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:30 am -
1 stop10h 42m
Tue 11/38:05 am -
1 stop7h 56m
Deal found 9/12![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:30 pm -
1 stop6h 13m
Wed 11/48:05 am -
1 stop7h 56m
Deal found 9/13![Frontier logo]()
$178
This Frontier deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:29 am -
1 stop7h 43m
Sat 10/317:52 am -
1 stop8h 09m
Deal found 9/11![Frontier logo]()
$226
One-way flights from LaGuardia to Dulles IntlSearch for one-way flight options from LaGuardia to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.
Search for one-way flight options from LaGuardia to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.
This Trip.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:29 am -
1 stop7h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$102
This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:59 pm -
1 stop7h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$105
This Expedia deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:15 am -
1 stop11h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$106
This Super.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/149:29 am -
1 stop7h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:30 pm -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$109
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:10 am -
1 stop11h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:15 am -
1 stop11h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$113
This Jetabroad deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:29 am -
1 stop7h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$114
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/319:29 am -
1 stop7h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$115
Find flight deals from LaGuardia to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from LaGuardia (LGA) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $145 (Kiwi.com) |
One-way from | $102 (Trip.com) |
Popular in | September |
Cheapest in | November |
Average price | $377 |
Good round-trip deal | $372 or less |
Good one-way deal | $205 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from LaGuardia to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 16, 2026.
Use the filters below to find and compare flights from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Sat 9/26
6:00 am-7:23 am
Nonstop1h 23m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$144
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Mon 10/12
6:00 am-7:23 am
Nonstop1h 23m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$150
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Sun 10/18
6:00 am-7:23 am
Nonstop1h 23m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$150
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Mon 11/9
10:27 am-11:55 am
Nonstop1h 28m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$150
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Thu 10/8
6:00 am-7:23 am
Nonstop1h 23m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$150
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Thu 10/15
6:00 am-7:23 am
Nonstop1h 23m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$174
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Sat 9/19
6:00 am-7:23 am
Nonstop1h 23m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$178
Quickest round-trip
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Tue 12/8
6:00 am-7:21 am
Nonstop1h 21m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$185
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Mon 11/16
2:59 pm-4:31 pm
Nonstop1h 32m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$185
New YorkWashington, D.C.
LGA New York LaGuardia - IAD Washington, D.C. Dulles Intl
LGAIAD
New York LaGuardia
Mon 11/2
6:00 am-7:22 am
Nonstop1h 22m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$186
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from LaGuardia to Dulles Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from LaGuardia to Dulles Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New York LaGuardia Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from LaGuardia to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from LaGuardia with our price prediction graph.
LGA-IAD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport
Prices
Airlines
What is the cheapest month to book a flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?
Currently, November is the cheapest month in which you can book a flight from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport (average of $263). Flying from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $377). 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.
What is the cheapest time of day to fly from LGA to IAD?
Find hourly flight availability from LaGuardia to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2026.
It’s typically best to fly out from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 66% on the flight price compared to flying in the afternoon, which is usually more expensive.
What is the cheapest day to fly from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from LaGuardia to Dulles Intl. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The best insider tips for New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport flights
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Cheapflights partnered with top experts to bring you the best recommendations for your New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport trip
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Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated September 16, 2026.
See what other customers who have flown with United Airlines from New York LaGuardia Airport to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Food
6.7
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Crew
8.1
Food
6.7
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
Find useful and relevant information for your journey from LaGuardia to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsAlexandria
Arlington
Owings Mills
Lanham
Tysons
Woodbridge
Reston
Chantilly
Herndon
Hyattsville
Rockville
Fredericksburg
Falls Church
Sterling
Hanover
Laurel
Springfield
Oxon Hill
Clinton
Hunt Valley
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Top airline flying from LaGuardia to Dulles Intl
Discover the top airline that operate flights from LaGuardia to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$127 | Average$319 | FlexibilityNo cancel fee | On-time69% |