Washington to Las Vegas DCA, IAD → LAS
Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) → McCarran International Airport (LAS)
The cheapest return found recently is $388 with Frontier Airlines, 17 Mar 2027 – 22 Mar 2027, found 2 days ago. The cheapest one-way found recently is $149 with Frontier Airlines, 2 Jan 2027, found 4 days ago.
Return
The cheapest return fare on each of 3 departure dates is usually $393 to $399.
Cheapest return found recently
$388
17 Mar 2027 – 22 Mar 2027 · Frontier Airlines
Washington Dulles International Airport (IAD) → McCarran International Airport (LAS)
Leaves 7:57 p.m. · Return leaves 10:14 p.m. · 9 h 47 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Cheapest nonstop return
$388
17 Mar 2027 – 22 Mar 2027 · Frontier Airlines
Washington Dulles International Airport (IAD) → McCarran International Airport (LAS)
Leaves 7:57 p.m. · Return leaves 10:14 p.m. · 9 h 47 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$388 17 Mar 2027 – 22 Mar 2027found 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $153 to $388.
At $388, the cheapest return found recently is at the high end of that range.
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 return price?
Compared with the cheapest return fare on each of 3 departure dates from 27 Oct to 17 Mar 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 5-night return fares leaving within 3 days of 17 Mar 2027 to compare.
Every date we hold
7 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 27 Oct – 9 Nov | $397 | Frontier Airlines | Washington Dulles International Airport (IAD) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 26 Dec – 31 Dec | $401 | Frontier Airlines | Washington Dulles International Airport (IAD) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 17 Mar 2027 – 22 Mar 2027 | $388 | Frontier Airlines | Washington Dulles International Airport (IAD) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
March 2027 is the cheapest month — from $388.
Airlines on the cheapest dates: Frontier Airlines.
One-way
The cheapest one-way fare on each of 4 departure dates is usually $125 to $143.
Cheapest one-way found recently
$149
2 Jan 2027 · Frontier Airlines
Washington Dulles International Airport (IAD) → McCarran International Airport (LAS)
Leaves 8:20 p.m. · 5 h 19 min trip
nonstop
found 4 days ago
Cheapest nonstop one-way
$149
2 Jan 2027 · Frontier Airlines
Washington Dulles International Airport (IAD) → McCarran International Airport (LAS)
Leaves 8:20 p.m. · 5 h 19 min trip
nonstop
found 4 days ago
Found recently, and the cheapest we hold
$149 2 Jan 2027found 4 days agoOpen this trip
$114 14 Decfound 5 days agoOpen this trip
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $73 to $255.
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 4 departure dates from 2 Nov to 2 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?
Yes. Among one-way fares leaving within 3 days of 2 Jan 2027, 30 Dec costs $141: $8 less than the cheapest found recently.
Frontier Airlines · Ronald Reagan National Airport (DCA) → McCarran International Airport (LAS) · 1 stop · found 5 days ago
Every date we hold
7 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 2 Nov | $128 | Frontier Airlines | Washington Dulles International Airport (IAD) → McCarran International Airport (LAS) | 2 stops | found 6 days ago | Open this trip |
| 14 Dec | $114 | Frontier Airlines | Washington Dulles International Airport (IAD) → McCarran International Airport (LAS) | 2 stops | found 5 days ago | Open this trip |
| 30 Dec | $141 | Frontier Airlines | Ronald Reagan National Airport (DCA) → McCarran International Airport (LAS) | 1 stop | found 5 days ago | Open this trip |
| 2 Jan 2027 | $149 | Frontier Airlines | Washington Dulles International Airport (IAD) → McCarran International Airport (LAS) | nonstop | found 4 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $114.
Airlines on the cheapest dates: Frontier Airlines.
Premium cabin fares from Washington to Las Vegas
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 17 Mar 2027 – 22 Mar 2027 in another cabin: Premium economy · Business · First
Today's prices for 2 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Washington to Las Vegas?
Return
Fares 30 to 59 days before departure were typically 34% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 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 |
|---|---|---|---|---|
| 0–6 days | $355 | $270 | +52% | 11 |
| 7–13 days | $270 | $270 | +16% | 11 |
| 14–29 days | $259 | $153 | +11% | 18 |
| 30–59 days | $233 | $233 | Cheapest seen | 11 |
| 60–89 days | $383 | $383 | +64% | 10 |
| 90–179 days | $341 | $341 | +46% | 9 |
One-way
The cheapest fares were 30 to 59 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 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 |
|---|---|---|---|---|
| 14–29 days | $119 | $73 | +4% | 11 |
| 30–59 days | $114 | $73 | Cheapest seen | 9 |
| 60–89 days | $126 | $114 | +11% | 10 |
| 180+ days | $232 | $230 | +104% | 21 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Baltimore → Las Vegas
57 km from Washington
$391
$3 more than flying from Washington
27 Oct – 9 Nov · BWI → LAS · out 1 stop, back 1 stop
found 2 days ago
Harrisburg → Las Vegas
148 km from Washington
$504
$116 more than flying from Washington
29 Jan 2027 – 31 Jan 2027 · MDT → LAS · out 1 stop, back 1 stop
found 4 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Baltimore → Las Vegas
57 km from Washington
$73
$76 less than flying from Washington
15 Dec · BWI → LAS · 2 stops
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 17 Mar 2027 – 22 Mar 2027. 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