Las Vegas to Washington LAS → DCA, IAD
McCarran International Airport (LAS) → Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD)
The cheapest return found recently is $405 with Frontier Airlines, 22 Nov – 29 Nov, found 6 days ago. The cheapest one-way found recently is $118 with Frontier Airlines, 20 Nov, found yesterday.
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$405
22 Nov – 29 Nov · Frontier Airlines
McCarran International Airport (LAS) → Washington Dulles International Airport (IAD)
Leaves 9:47 p.m. · Return leaves 10:47 p.m. · 43 h 58 min of travel, both ways together
out nonstop, back 1 stop
found 6 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$405 22 Nov – 29 Novfound 6 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 23 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $161 to $405.
At $405, the cheapest return found recently is at the high end of that range.
23 days is a short history, so treat this range as an early guide.
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 22 Nov to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 22 Nov – 29 Nov | $405 | Frontier Airlines | McCarran International Airport (LAS) → Washington Dulles International Airport (IAD) | out nonstop, back 1 stop | found 6 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 $146 to $203.
Cheapest one-way found recently
$118
20 Nov · Frontier Airlines
McCarran International Airport (LAS) → Washington Dulles International Airport (IAD)
Leaves 9:47 p.m. · 4 h 23 min trip
nonstop
found yesterday
Cheapest nonstop one-way
$118
20 Nov · Frontier Airlines
McCarran International Airport (LAS) → Washington Dulles International Airport (IAD)
Leaves 9:47 p.m. · 4 h 23 min trip
nonstop
found yesterday
Found recently, and the cheapest we hold
$118 20 Novfound yesterdayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $94 to $250.
25 days is a short history, so treat this range as an early guide.
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 20 Nov to 3 Jan 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 20 Nov to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Nov | $118 | Frontier Airlines | McCarran International Airport (LAS) → Washington Dulles International Airport (IAD) | nonstop | found yesterday | Open this trip |
| 6 Dec | $174 | Southwest Airlines | McCarran International Airport (LAS) → Ronald Reagan National Airport (DCA) | 1 stop | found 5 days ago | Open this trip |
| 3 Jan 2027 | $232 | Frontier Airlines | McCarran International Airport (LAS) → Washington Dulles International Airport (IAD) | nonstop | found 4 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $118.
Airlines on the cheapest dates: Frontier Airlines, Southwest 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 22 Nov – 29 Nov in another cabin: Premium economy · Business · First
Today's prices for 20 Nov 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 39% lower than 30 to 59 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (23 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 |
|---|---|---|---|---|
| 30–59 days | $278 | $176 | +64% | 20 |
| 60–89 days | $170 | $170 | Cheapest seen | 8 |
| 90–179 days | $425 | $276 | +150% | 8 |
| 180+ days | $475 | $475 | +179% | 8 |
One-way
Not enough history yet: in 25 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
One-way
Las Vegas → Baltimore
57 km from Washington
$127
$9 more than flying to Washington
15 Dec · LAS → BWI · 1 stop
found yesterday
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 22 Nov – 29 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
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