Cheap flights from Phoenix to Washington from $140 AZA, PHX → DCA, IAD
Phoenix-Mesa Gateway Airport (AZA), Phoenix Sky Harbor International Airport (PHX) → Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD)
The cheapest return found recently is $976 with Sun Country Airlines, 18 Dec – 23 Dec, found 2 days ago. The cheapest one-way found recently is $140 with Frontier Airlines, 17 Feb 2027, found 4 days ago.
- Cheapest one-way found recently
- $140, found 4 days ago
- Cheapest return found recently
- $976, 18 Dec to 23 Dec
- Usual return price
- $360 to $682
- Cheapest month to fly
- November 2026, return fares from $331 found in the last 7 days
Return
The cheapest return fare on each of 3 departure dates is usually $360 to $682.
Cheapest return found recently
$976
18 Dec – 23 Dec · Sun Country Airlines
Phoenix-Mesa Gateway Airport (AZA) → Washington Dulles International Airport (IAD)
Leaves 7:55 p.m. · Return leaves 10:06 p.m. · 45 h 44 min of travel, both ways together
out 2 stops, back 2 stops
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$976 18 Dec – 23 Decfound 2 days agoSee prices for these dates
$331 24 Nov – 1 Decfound 4 days agoSee prices for these dates
What have prices looked like?
Over 36 days, 26 Sept to 11 Nov, the cheapest return we saw each day was $163 to $339.
At $976, the cheapest return found recently is above that range.
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 23 Nov to 18 Dec, 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 18 Dec to compare.
Every date we hold
5 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Nov – 24 Nov | $388 | Frontier Airlines | Phoenix Sky Harbor International Airport (PHX) → Washington Dulles International Airport (IAD) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 24 Nov – 1 Dec | $331 | Frontier Airlines | Phoenix Sky Harbor International Airport (PHX) → Washington Dulles International Airport (IAD) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 18 Dec – 23 Dec | $976 | Sun Country Airlines | Phoenix-Mesa Gateway Airport (AZA) → Washington Dulles International Airport (IAD) | out 2 stops, back 2 stops | found 2 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $331.
Airlines on the cheapest dates: Frontier Airlines, Sun Country Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$140
17 Feb 2027 · Frontier Airlines
Phoenix Sky Harbor International Airport (PHX) → Washington Dulles International Airport (IAD)
Leaves 5:10 a.m. · 31 h 33 min trip
2 stops
found 4 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$140 17 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 36 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $73 to $278.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 17 Feb 2027 to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 17 Feb 2027 | $140 | Frontier Airlines | Phoenix Sky Harbor International Airport (PHX) → Washington Dulles International Airport (IAD) | 2 stops | found 4 days ago | Open this trip |
Airlines on the cheapest dates: Frontier Airlines.
Premium cabin fares from Phoenix 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 18 Dec – 23 Dec in another cabin: Premium economy · Business · First
Today's prices for 17 Feb 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Phoenix to Washington?
Return
Fares 14 to 29 days before departure were typically 29% lower than 0 to 6 days before departure.
From the cheapest return each day between 26 Sept and 11 Nov (36 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 | $386 | $163 | +40% | 21 |
| 7–13 days | $319 | $163 | +16% | 30 |
| 14–29 days | $276 | $239 | Cheapest seen | 21 |
One-way
Fares 90 to 179 days before departure were typically 42% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (36 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 | $239 | $238 | +73% | 7 |
| 7–13 days | $238 | $166 | +73% | 17 |
| 14–29 days | $169 | $73 | +23% | 19 |
| 30–59 days | $197 | $145 | +43% | 17 |
| 90–179 days | $138 | $134 | Cheapest seen | 7 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Phoenix → Baltimore
57 km from Washington
$1,147
$171 more than flying to Washington
18 Dec – 25 Dec · AZA → BWI · out 3 stops, back 2 stops
found 4 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Phoenix → Baltimore
57 km from Washington
$158
$18 more than flying to Washington
12 Dec · PHX → BWI · 1 stop
found 3 days ago
Phoenix → Hagerstown
108 km from Washington
$565
$425 more than flying to Washington
30 Mar 2027 · PHX → HGR · 2 stops
found 2 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 18 Dec – 23 Dec. 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 Phoenix to Washington?
The cheapest return found recently is $976 with Sun Country Airlines, 18 Dec to 23 Dec, found 2 days ago. The cheapest return we hold, of any age, is $331 with Frontier Airlines, 24 Nov to 1 Dec, found 4 days ago. The cheapest return fare on each of 3 departure dates is usually $360 to $682.
How much is a one-way flight from Phoenix to Washington?
The cheapest one-way found recently is $140 with Frontier Airlines, 17 Feb 2027, found 4 days ago.
What is the cheapest month to fly from Phoenix to Washington?
November 2026 is the cheapest month for a return, from $331, 24 Nov to 1 Dec, found 4 days ago.
How far ahead should I book a flight from Phoenix to Washington?
In 36 days of prices between 26 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 29% lower than 0 to 6 days before departure. In 36 days of prices between 24 Sept and 11 Nov, one-way fares 90 to 179 days before departure were typically 42% lower than 0 to 6 days before departure.
How long is the flight from Phoenix to Washington?
The cheapest one-way found recently, with Frontier Airlines on 17 Feb 2027, takes 31 h 33 min with 2 stops.
Which airlines have the cheapest flights from Phoenix to Washington?
Between 23 Nov and 18 Dec, Frontier Airlines has the cheapest return on 2 of the 3 departure dates we hold, and Sun Country 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