Cheap flights from Idaho (ID) to Washington (WAS)

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How to find the cheapest flight from
Idaho to Washington (WAS)

All the information you need to plan the best null to WAS flight in 2021: compare Idaho to Washington flight prices with the expected peak season, weather and rainfall in Washington.
When is the cheapest time to fly from Idaho to Washington (ID - WAS)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Washington as you normally would.

How far in advance should I book a flight from Idaho to Washington?

To save on the cost of your flight from Idaho to Washington, book at least 57 days before your planned departure. Booking around this time can save you about 85% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $515 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $848.

What is the cheapest month to fly from Idaho to Washington?

Our data shows that August tends to be the cheapest month to fly to Washington from Idaho. Users have commonly found prices around $391 for the month, but tickets can be as low as $203. Due to multiple factors, prepare for potentially higher prices in March.

Cheap flights from Idaho to Washington in October, November 2021

The best prices found for Idaho to WAS flights for October, November
28 Oct - 3 Nov
$215pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
   
2 STOPS
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
28 Oct - 3 Nov
$229pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
   
2 STOPS
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
   
2 STOPS
BOI
Boise Air Term. Gowen Fld
30 Oct - 2 Nov
$234pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld

Idaho to Washington 2021 flight deals

Cheap flights to Washington from Idaho found for this year
28 Oct - 3 Nov
$215pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
   
2 STOPS
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
28 Oct - 3 Nov
$229pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
   
2 STOPS
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
   
2 STOPS
BOI
Boise Air Term. Gowen Fld
30 Oct - 2 Nov
$234pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld

Last minute flights from Idaho to Washington

Late deals on round-trip flights to Washington from Idaho, departing today and this week
28 Oct - 3 Nov
$215pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
   
2 STOPS
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
28 Oct - 3 Nov
$229pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
   
2 STOPS
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
   
2 STOPS
BOI
Boise Air Term. Gowen Fld
28 Oct - 3 Nov
$242pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
   
2 STOPS
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld

One-way flights to Washington from Idaho

The cheapest one-way flights from Idaho to Washington
2:05 am - 1:58 am
Multiple Airlines
1 Stop
20h 53m
GEG - BWI
Multiple Airlines
$118
Kiwi.com
9:50 am - 12:44 am
Multiple Airlines
1 Stop
12h 54m
BOI - BWI
Multiple Airlines
$121
Kiwi.com
9:05 am - 5:55 am
American Airlines
1 Stop
18h 50m
IDA - BWI
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Idaho</span> to <span class="emphasized">Washington</span> flights.

Flight FAQs

From Idaho to Washington

Which airlines flying from Idaho to Washington have flexible cancellations due to COVID-19?

Delta, United Airlines, and American Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Idaho to Washington for under $300 on Cheapflights?

Yes, there are multiple flights from Idaho to Washington for under $300. The cheapest flight booked recently is on Multiple Airlines for just $215, but on average you can expect to pay $251.

Are there last-minute flights available from Idaho to Washington for under $300?

There are currently 20+ open flights from Idaho to Washington within the next 7 days for less than $300.

What are the most popular airlines that fly from Idaho to Washington?

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from Idaho to Washington.

What are the most popular routes from Idaho to Washington?

When deciding which route to take from Idaho to Washington consider Boise Air Term. Gowen Fld - Washington Dulles Intl, Spokane - Washington Dulles Intl or Boise Air Term. Gowen Fld - Baltimore/Washington as they are the most popular.

What are the cheapest flights from Idaho to Washington?

On average you can expect to pay $568 for a flight from Idaho to Washington. The cheapest flight overall is $168 while the most popular route, (Boise Air Term. Gowen Fld - Washington Dulles Intl) is currently priced at $323.

COVID Restrictions

View COVID Travel Restrictions for Washington, DC

Do I need a COVID test to fly to Washington from Idaho?

Information is based on travel restrictions for travel to Washington within the United States

Most visitors from Idaho need to provide a negative COVID-19 test result and/or quarantine to enter Washington.

COVID-19 testing requirements
Visitors from Idaho must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Washington.

Quarantine requirements
Visitors from Idaho are not required to quarantine after entering Washington.

Do I need a test to fly back to Idaho from Washington?

Returning to Idaho from Washington

COVID-19 testing requirements
Visitors from Washington must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Idaho.

Quarantine requirements
Visitors from Washington are not required to quarantine after entering Idaho.

Hide COVID Travel Restrictions for Washington, DC

Departure points for flights from Idaho to Washington

Select to see more specific information for flights to Washington from all departure points in Idaho.

Destination information for Washington

Things to know before you go - useful duration and weather info for your trip from Idaho to Washington.
Average temperature for October in Washington
71.6 °F
Avg rainfall for October in Washington
3.7 ″

Airports servicing

Idaho Falls (IDA)
Lewiston (LWS)
Pocatello (PIH)
Hailey Sun Valley-Friedman (SUN)
Twin Falls (TWF)

Airports servicing Washington

Reagan-National (DCA)

Top 5 airlines flying from Idaho to Washington

The chart below displays the airlines Cheapflights users traveling from Idaho to Washington choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$110 $200 No cancel fee 62%
American Airlines
$138 $428 No cancel fee 71%
Delta
$169 $608 No cancel fee N/A
Alaska Airlines
$172 $304 No cancel fee 75%
United Airlines
$173 $530 No cancel fee 69%
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