Cheap flights from Las Vegas to Washington from $109 LAS → DCA, IAD
McCarran International Airport (LAS) → Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD)
The cheapest return found recently is $432 with Frontier Airlines, 21 Nov – 28 Nov, found 4 days ago. The cheapest one-way found recently is $109 with Frontier Airlines, 4 Feb 2027, found 4 days ago.
- Cheapest one-way found recently
- $109, found 4 days ago
- Cheapest return found recently
- $432, 21 Nov to 28 Nov
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$432
21 Nov – 28 Nov · Frontier Airlines
McCarran International Airport (LAS) → Washington Dulles International Airport (IAD)
Leaves 9:47 p.m. · Return leaves 1:09 p.m. · 9 h 45 min of travel, both ways together
out nonstop, back nonstop
found 4 days ago
Cheapest nonstop return
$432
21 Nov – 28 Nov · Frontier Airlines
McCarran International Airport (LAS) → Washington Dulles International Airport (IAD)
Leaves 9:47 p.m. · Return leaves 1:09 p.m. · 9 h 45 min of travel, both ways together
out nonstop, back nonstop
found 4 days ago
Found recently, and the cheapest we hold
$432 21 Nov – 28 Novfound 4 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 47 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $161 to $448.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 7-night return fares leaving within 3 days of 21 Nov to compare.
Every date we hold
2 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 21 Nov – 28 Nov | $432 | Frontier Airlines | McCarran International Airport (LAS) → Washington Dulles International Airport (IAD) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
Airlines on the cheapest dates: Frontier Airlines.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $110 to $115.
Cheapest one-way found recently
$109
4 Feb 2027 · Frontier Airlines
McCarran International Airport (LAS) → Washington Dulles International Airport (IAD)
Leaves 5:09 a.m. · 16 h 10 min trip
2 stops
found 4 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$109 4 Feb 2027found 4 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $77 to $250.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 4 Feb 2027 to 24 Feb 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 4 Feb 2027 to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 4 Feb 2027 | $109 | Frontier Airlines | McCarran International Airport (LAS) → Washington Dulles International Airport (IAD) | 2 stops | found 4 days ago | Open this trip |
| 20 Feb 2027 | $110 | Frontier Airlines | McCarran International Airport (LAS) → Washington Dulles International Airport (IAD) | 2 stops | found 5 days ago | Open this trip |
| 24 Feb 2027 | $120 | Alaska Airlines | McCarran International Airport (LAS) → Ronald Reagan National Airport (DCA) | 1 stop | found 5 days ago | Open this trip |
Airlines on the cheapest dates: Frontier Airlines, Alaska Airlines.
Premium cabin fares from Las Vegas to Washington
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 21 Nov – 28 Nov in another cabin: Premium economy · Business · First
Today's prices for 4 Feb 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Las Vegas to Washington?
Return
Fares 60 to 89 days before departure were typically 59% lower than 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (47 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $411 | $384 | +142% | 8 |
| 14–29 days | $357 | $161 | +110% | 20 |
| 30–59 days | $319 | $176 | +88% | 24 |
| 60–89 days | $170 | $170 | Cheapest seen | 8 |
| 90–179 days | $425 | $276 | +150% | 8 |
| 180+ days | $475 | $475 | +179% | 8 |
One-way
The cheapest fares were 60 to 89 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 60–89 days | $83 | $83 | Cheapest seen | 14 |
| 90–179 days | $120 | $77 | +45% | 45 |
| 180+ days | $233 | $221 | +181% | 19 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Las Vegas → Baltimore
57 km from Washington
$310
$122 less than flying to Washington
21 Feb 2027 – 27 Feb 2027 · LAS → BWI · out 2 stops, back 1 stop
found 5 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Las Vegas → Baltimore
57 km from Washington
$104
$5 less than flying to Washington
22 Jan 2027 · LAS → BWI · 2 stops
found 4 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 21 Nov – 28 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Las Vegas to Washington?
The cheapest return found recently is $432 with Frontier Airlines, 21 Nov to 28 Nov, found 4 days ago.
How much is a one-way flight from Las Vegas to Washington?
The cheapest one-way found recently is $109 with Frontier Airlines, 4 Feb 2027, found 4 days ago. The cheapest one-way fare on each of 3 departure dates is usually $110 to $115.
How far ahead should I book a flight from Las Vegas to Washington?
In 47 days of prices between 24 Sept and 11 Nov, return fares 60 to 89 days before departure were typically 59% lower than 7 to 13 days before departure. In 49 days of prices between 24 Sept and 11 Nov, one-way fares were cheapest 60 to 89 days before departure.
Is there a direct flight from Las Vegas to Washington?
Yes, the cheapest nonstop return found recently is $432 with Frontier Airlines, 21 Nov to 28 Nov, found 4 days ago.
How long is the flight from Las Vegas to Washington?
The cheapest one-way found recently, with Frontier Airlines on 4 Feb 2027, takes 16 h 10 min with 2 stops.
Which airlines have the cheapest flights from Las Vegas to Washington?
Between 4 Feb 2027 and 24 Feb 2027, Frontier Airlines has the cheapest one-way on 2 of the 3 departure dates we hold, and Alaska Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work