$129 Cheap Delta flights Washington (IAD) to Las Vegas (LAS)

View $129 flight on Mon, Jul 7, 2025Opens in a new window

$129 Cheap Delta flights Washington (IAD) to Las Vegas (LAS)

Prices were available within the past 7 days and start at $129 for one-way flights and $211 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Jul 1 - Fri, Aug 1
IAD
Washington
LAS
Las Vegas
$211 Roundtrip, found 1 day ago
$211
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jul 1 from Washington to Las Vegas, returning Fri, Aug 1, priced at $211 found 1 day ago
Delta
Wed, Aug 6 - Sat, Aug 9
IAD
Washington
LAS
Las Vegas
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Delta flight, departing Wed, Aug 6 from Washington to Las Vegas, returning Sat, Aug 9, priced at $257 just found
Flights from Washington (IAD) to Las Vegas (LAS)
Origin airport
Washington Dulles Intl.
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Sun Country Airlines, United
Popular airline
Frontier Airlines
Distance
2060 mi
Average flight time
3 hours 2 mins

Frequently asked questions

How much is a Delta Air Lines flight from Washington Dulles Intl. Airport (IAD) to Harry Reid Intl. Airport (LAS)?
Apply the "Price (lowest to highest)" filter on Expedia to search for cheap Delta Air Lines round-trip flights from $211 from IAD to LAS. Affordable one-way options from $129 are available too.**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 IAD to LAS with Delta Air Lines?
January is one of the cheapest months to fly to Las Vegas with Delta Air Lines. You could also find excellent prices on return and one-way fares in June.
What is the cheapest time to book flights from Washington Dulles Intl. Airport (IAD) to Harry Reid Intl. Airport (LAS) with Delta Air Lines?
Begin your search one to three months before your departure to get cheap fares on Delta Air Lines flights from Washington Dulles Intl. Airport (IAD) to Harry Reid Intl. Airport (LAS). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic journeys.*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 Delta Air Lines fly nonstop from Washington Dulles Intl. Airport (IAD) to Harry Reid Intl. Airport (LAS)?
Simply enter your dates, click search and check "Nonstop" on Expedia to browse any direct flights from IAD to LAS with Delta Air Lines or another airline.
What is the earliest Delta Air Lines flight from IAD to LAS?
Sort your results by "Early Morning" and "Morning" to find the earliest flights from IAD to LAS. Setting off early means you're 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 Delta Air Lines fly into in Las Vegas?
Delta Air Lines flights from Washington Dulles Intl. Airport (IAD) to Las Vegas land at Harry Reid Intl. Airport (LAS). This is the main entry point to this destination.
Why fly with Delta Air Lines from IAD to LAS?
With a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a top choice for many passengers flying from IAD to LAS. Also, if you're a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Washington Dulles Intl. Airport (IAD) to Harry Reid Intl. Airport (LAS)?
Changes are often free within 24 hours of making a booking, but your airline may charge you after that. For more details about altering your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to change your plans without additional charges, apply the "No cancel fee" or "Changes included" filter when organizing your next break.

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*Available to One Key members.