$249 Cheap Flights from Hilo (ITO) to Washington (IAD)

View $249 flight on Tue, Oct 7, 2025Opens in a new window

Popular airlines from Hilo Intl. Airport (ITO) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Hilo to Washington (ITO-IAD)

Prices were available within the past 7 days and start at $249 for one-way flights and $526 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Aug 27 - Mon, Sep 15
ITO
Hawaii Island
IAD
Washington
$526 Roundtrip, found 8 hours ago
$526
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Wed, Aug 27 from Hawaii Island to Washington, returning Mon, Sep 15, priced at $526 found 8 hours ago
Hawaiian Airlines
Mon, Nov 17 - Wed, Dec 3
ITO
Hawaii Island
IAD
Washington
$531 Roundtrip, found 1 day ago
$531
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Mon, Nov 17 from Hawaii Island to Washington, returning Wed, Dec 3, priced at $531 found 1 day ago
Alaska Airlines
Wed, Aug 27 - Sun, Sep 14
ITO
Hawaii Island
IAD
Washington
$547 Roundtrip, found 8 hours ago
$547
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Wed, Aug 27 from Hawaii Island to Washington, returning Sun, Sep 14, priced at $547 found 8 hours ago
Alaska Airlines
Thu, Sep 4 - Wed, Sep 10
ITO
Hawaii Island
IAD
Washington
$559 Roundtrip, found 5 days ago
$559
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Sep 4 from Hawaii Island to Washington, returning Wed, Sep 10, priced at $559 found 5 days ago
Alaska Airlines
Wed, Aug 20 - Sun, Sep 7
ITO
Hawaii Island
IAD
Washington
$568 Roundtrip, found 8 hours ago
$568
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Wed, Aug 20 from Hawaii Island to Washington, returning Sun, Sep 7, priced at $568 found 8 hours ago
Hawaiian Airlines
Wed, Aug 27 - Thu, Sep 18
ITO
Hawaii Island
IAD
Washington
$569 Roundtrip, found 8 hours ago
$569
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Wed, Aug 27 from Hawaii Island to Washington, returning Thu, Sep 18, priced at $569 found 8 hours ago
Hawaiian Airlines
Wed, Aug 20 - Wed, Sep 10
ITO
Hawaii Island
IAD
Washington
$571 Roundtrip, found 8 hours ago
$571
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Wed, Aug 20 from Hawaii Island to Washington, returning Wed, Sep 10, priced at $571 found 8 hours ago
Hawaiian Airlines
Wed, Aug 27 - Sat, Sep 13
ITO
Hawaii Island
IAD
Washington
$581 Roundtrip, found 8 hours ago
$581
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Wed, Aug 27 from Hawaii Island to Washington, returning Sat, Sep 13, priced at $581 found 8 hours ago
United
Tue, Jul 22 - Tue, Aug 12
ITO
Hawaii Island
IAD
Washington
$832 Roundtrip, found 8 hours ago
$832
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Jul 22 from Hawaii Island to Washington, returning Tue, Aug 12, priced at $832 found 8 hours ago
Delta
Mon, Jul 21 - Mon, Aug 4
ITO
Hawaii Island
IAD
Washington
$881 Roundtrip, found 8 hours ago
$881
Roundtrip
found 8 hours ago
Select Delta flight, departing Mon, Jul 21 from Hawaii Island to Washington, returning Mon, Aug 4, priced at $881 found 8 hours ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $1,004
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $1,004
Flights from Hilo (ITO) to Washington (IAD)
Origin airport
Hilo Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$525
Distance
4720 mi

Hilo to Washington Flights

The cheapest times to fly from Hilo to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Hilo to Washington are during the month of August. You can find some of the cheapest flights from Hilo to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Hilo to Washington

Sunday is one of the best days to book for cheap flights from Hilo to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Hilo to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Hilo to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $249 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Hilo to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Hilo to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Hilo Intl. Airport (ITO) to Washington Dulles Intl. Airport (IAD) cost?
Discover the latest flight deals from ITO to IAD by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ITO to IAD?
The cheapest flights from ITO to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ITO to IAD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ITO to IAD. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Hilo Intl. Airport (ITO) to Washington Dulles Intl. Airport (IAD)?
There aren't any daily nonstop flights available from Hilo Intl. Airport (ITO) to Washington Dulles Intl. Airport (IAD). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from ITO to IAD?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Hilo Intl. Airport (ITO) to Washington Dulles Intl. Airport (IAD)?
To reach Washington Dulles Intl. Airport (IAD) on schedule, select a flight that takes off from Hilo Intl. Airport (ITO) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Hilo Intl. Airport (ITO) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your ticket from ITO to IAD just before your journey is usually more expensive. However, if there's some wiggle room with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book an ITO to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking an ITO to IAD flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the stress out of planning your trip. Simply pick your flights and select from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Hilo Intl. Airport (ITO) to Washington Dulles Intl. Airport (IAD)?
Typically, it's possible to reschedule or cancel your ITO to IAD flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.