Find cheap flights from Idaho to Washington

Find cheap flights from Idaho to Washington

Round-trip
Economy
From?
Washington All airports
Sun 5/31
Sun 6/7
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Good to know

Low season

January Best time to beat the crowds with an average 6% drop in price.

High season

July Most popular time to fly with an average 3% increase in price.

Average price of a round-trip

$594 (avg. price over the last 2 weeks)

Good deal for a round-trip

$294 or less

FAQs for booking Idaho to Washington flights

How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?

Book cheap flights from Idaho to Washington (round-trip)

Airports
Origin
Idaho Falls
$266
only
$266
Boise
$220
only
$220
Destination
Baltimore
$220
only
$220
Washington
$250
only
$250
$250
only
$250
Sun, Jun 21
BOI
Boise Airport
BWI
Baltimore/Washington Airport
16h 38m
Mon, Jul 6
BWI
Baltimore/Washington Airport
BOI
Boise Airport
20h 54m
Trip: 16 days
Based on null reviews
Sun, Jun 21
BOI
Boise Airport
BWI
Baltimore/Washington Airport
16h 38m
Sun, Jul 5
BWI
Baltimore/Washington Airport
BOI
Boise Airport
44h 54m
Trip: 15 days
Based on null reviews
Tue, Aug 18
BOI
Boise Airport
BWI
Baltimore/Washington Airport
8h 55m
Fri, Aug 21
BWI
Baltimore/Washington Airport
BOI
Boise Airport
9h 56m
Trip: 4 days
Based on null reviews
Wed, Sep 23
BOI
Boise Airport
IAD
Washington Dulles Airport
8h 12m
Mon, Oct 5
IAD
Washington Dulles Airport
BOI
Boise Airport
8h 13m
Trip: 13 days
Based on null reviews
Sun, Jun 21
BOI
Boise Airport
BWI
Baltimore/Washington Airport
16h 38m
Tue, Jul 7
BWI
Baltimore/Washington Airport
BOI
Boise Airport
43h 59m
Trip: 17 days
Based on null reviews
Fri, Sep 18
BOI
Boise Airport
DCA
Reagan Washington National Airport
11h 58m
Sun, Sep 27
DCA
Reagan Washington National Airport
BOI
Boise Airport
8h 39m
Trip: 10 days
Based on null reviews
Tue, Jul 14
BOI
Boise Airport
BWI
Baltimore/Washington Airport
21h 45m
Sat, Jul 18
BWI
Baltimore/Washington Airport
BOI
Boise Airport
26h 20m
Trip: 5 days
Based on null reviews
Thu, Jun 18
BOI
Boise Airport
BWI
Baltimore/Washington Airport
37h 47m
Mon, Jul 6
BWI
Baltimore/Washington Airport
BOI
Boise Airport
20h 54m
Trip: 19 days
Based on null reviews
Thu, Jul 16
BOI
Boise Airport
BWI
Baltimore/Washington Airport
16h 19m
Sat, Jul 18
BWI
Baltimore/Washington Airport
BOI
Boise Airport
26h 20m
Trip: 3 days
Based on null reviews
Tue, Jul 28
IDA
Idaho Falls Fanning Field
IAD
Washington Dulles Airport
12h 58m
Tue, Aug 4
IAD
Washington Dulles Airport
IDA
Idaho Falls Fanning Field
9h 26m
Trip: 8 days
Based on null reviews
Tue, Sep 1
IDA
Idaho Falls Fanning Field
DCA
Reagan Washington National Airport
13h 30m
Tue, Sep 8
DCA
Reagan Washington National Airport
IDA
Idaho Falls Fanning Field
11h 18m
Trip: 8 days
Based on null reviews
Wed, Jul 22
IDA
Idaho Falls Fanning Field
BWI
Baltimore/Washington Airport
8h 18m
Wed, Jul 29
BWI
Baltimore/Washington Airport
IDA
Idaho Falls Fanning Field
14h 07m
Trip: 8 days
Based on null reviews
Tue, Jul 14
BOI
Boise Airport
BWI
Baltimore/Washington Airport
21h 45m
Sun, Jul 19
BWI
Baltimore/Washington Airport
BOI
Boise Airport
12h 10m
Trip: 6 days
Based on null reviews
Tue, Aug 4
IDA
Idaho Falls Fanning Field
IAD
Washington Dulles Airport
12h 58m
Sun, Aug 9
IAD
Washington Dulles Airport
IDA
Idaho Falls Fanning Field
7h 03m
Trip: 6 days
Based on null reviews
Tue, Aug 4
IDA
Idaho Falls Fanning Field
DCA
Reagan Washington National Airport
8h 40m
Sun, Aug 9
DCA
Reagan Washington National Airport
IDA
Idaho Falls Fanning Field
9h 57m
Trip: 6 days
Based on null reviews
Fri, Aug 7
IDA
Idaho Falls Fanning Field
BWI
Baltimore/Washington Airport
8h 27m
Tue, Aug 11
BWI
Baltimore/Washington Airport
IDA
Idaho Falls Fanning Field
10h 11m
Trip: 5 days
Based on null reviews
Wed, Sep 23
BOI
Boise Airport
DCA
Reagan Washington National Airport
5h 51m
Mon, Oct 5
DCA
Reagan Washington National Airport
BOI
Boise Airport
7h 19m
Trip: 13 days
Based on null reviews
Thu, Jun 18
BOI
Boise Airport
BWI
Baltimore/Washington Airport
37h 47m
Sun, Jul 5
BWI
Baltimore/Washington Airport
BOI
Boise Airport
15h 27m
Trip: 18 days
Based on null reviews
Thu, Jul 16
BOI
Boise Airport
BWI
Baltimore/Washington Airport
16h 19m
Sun, Jul 19
BWI
Baltimore/Washington Airport
BOI
Boise Airport
12h 10m
Trip: 4 days
Based on null reviews
Wed, Jul 15
BOI
Boise Airport
IAD
Washington Dulles Airport
9h 08m
Sat, Jul 18
IAD
Washington Dulles Airport
BOI
Boise Airport
9h 35m
Trip: 4 days
Based on null reviews

Book cheap flights from Idaho to Washington (one-way)

Airports
Origin
Idaho Falls
$131
only
$131
Boise
$125
only
$125
Destination
Baltimore
$125
only
$125
Washington
$143
only
$143
$143
only
$143
Thu, Jun 25
BOI
Boise Airport
BWI
Baltimore/Washington Airport
17h 02m
Based on null reviews
Thu, Jul 16
IDA
Idaho Falls Fanning Field
BWI
Baltimore/Washington Airport
39h 44m
Based on null reviews
Tue, Jun 23
BOI
Boise Airport
DCA
Reagan Washington National Airport
11h 48m
Based on null reviews
Tue, Jun 23
BOI
Boise Airport
BWI
Baltimore/Washington Airport
12h 20m
Based on null reviews
Tue, Jun 23
BOI
Boise Airport
IAD
Washington Dulles Airport
12h 24m
Based on null reviews
Sat, Jul 4
IDA
Idaho Falls Fanning Field
BWI
Baltimore/Washington Airport
23h 26m
Based on null reviews
Mon, Jun 29
BOI
Boise Airport
BWI
Baltimore/Washington Airport
12h 20m
Based on null reviews
Wed, Jun 24
BOI
Boise Airport
DCA
Reagan Washington National Airport
11h 48m
Based on null reviews
Fri, Jun 26
BOI
Boise Airport
DCA
Reagan Washington National Airport
11h 48m
Based on null reviews
Fri, Jun 26
BOI
Boise Airport
IAD
Washington Dulles Airport
12h 24m
Based on null reviews
Thu, May 28
BOI
Boise Airport
DCA
Reagan Washington National Airport
17h 24m
Based on null reviews
Wed, Jun 17
BOI
Boise Airport
BWI
Baltimore/Washington Airport
12h 20m
Based on null reviews
Fri, Jun 26
BOI
Boise Airport
BWI
Baltimore/Washington Airport
12h 20m
Based on null reviews
Thu, Jul 16
IDA
Idaho Falls Fanning Field
BWI
Baltimore/Washington Airport
8h 27m
Based on null reviews
Thu, Jul 16
IDA
Idaho Falls Fanning Field
IAD
Washington Dulles Airport
6h 00m
Based on null reviews
Thu, Jun 25
BOI
Boise Airport
DCA
Reagan Washington National Airport
45h 38m
Based on null reviews
Thu, Jul 16
IDA
Idaho Falls Fanning Field
DCA
Reagan Washington National Airport
8h 40m
Based on null reviews
Thu, Jun 25
BOI
Boise Airport
DCA
Reagan Washington National Airport
21h 52m
Based on null reviews
Wed, Jun 17
BOI
Boise Airport
DCA
Reagan Washington National Airport
11h 48m
Based on null reviews
Tue, Jun 23
BOI
Boise Airport
IAD
Washington Dulles Airport
12h 24m
Based on null reviews

Top airline flying from Idaho to Washington

Scores according to KAYAK customer reviews

8.0
Delta
Overall score based on 28,354 reviews
8.2
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews
Read more about Delta
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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