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Hilo

$342+ Cheap flights from St. Louis to Hilo (STL - ITO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ITO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from St. Louis to Hilo

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Hilo (ITO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$548
(Trip.com)

One-way from

$342
(Alaska Airlines)

Popular in

June

Cheapest in

September

Average price

$580
From Lambert-St Louis to Hilo Intl
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One-way flight from Lambert-St Louis to Hilo Intl
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Highest demand for flights based on searches. 23% potential increase in price ($277 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from St. Louis to Hilo

Cheapest flights from St. Louis to Hilo
Explore the most affordable flight options available from St. Louis to Hilo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Trip.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:00 amSTL - ITO
2 stops20h 26mAlaska Airlines
Fri 11/77:43 pmITO - STL
2 stops15h 35mAlaska Airlines
Deal found 9/16$548
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/173:57 pmSTL - ITO
2 stops35h 22mAlaska Airlines
Mon 10/209:00 pmITO - STL
2 stops22h 03mAlaska Airlines
Deal found 9/17$728
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/233:35 pmSTL - ITO
2 stops30h 21mAlaska Airlines
Tue 10/219:00 pmITO - STL
2 stops13h 01mAlaska Airlines
Deal found 9/15$744
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:00 amSTL - ITO
2 stops14h 59mAlaska Airlines
Wed 10/17:00 pmITO - STL
2 stops17h 34mAlaska Airlines
Deal found 9/15$749
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/13:35 pmSTL - ITO
2 stops35h 42mAlaska Airlines
Sat 11/19:00 pmITO - STL
2 stops22h 59mAlaska Airlines
Deal found 9/16$851
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:00 amSTL - ITO
2 stops14h 59mDelta
Tue 9/2312:20 pmITO - STL
2 stops15h 17mDelta
Deal found 9/16$854
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:40 pmSTL - ITO
2 stops29h 59mUnited Airlines
Tue 10/216:00 amITO - STL
3 stops31h 57mUnited Airlines
Deal found 9/15$933

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Hilo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from St. Louis to Hilo that are best for you.

Fly from

St. Louis

Fly to

Hilo

Route

Depart

Return

Price

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Fri 10/31

7:00 am-10:26 pm

2 stops20h 26m

Hilo Intl

Fri 11/7

7:43 pm-3:18 pm

2 stops15h 35m

$548

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Fri 10/17

3:57 pm-10:19 pm

2 stops35h 22m

Hilo Intl

Mon 10/20

9:00 pm-12:03 am

2 stops22h 03m

$728

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Tue 9/23

3:35 pm-4:56 pm

2 stops30h 21m

Hilo Intl

Tue 10/21

9:00 pm-3:01 pm

2 stops13h 01m

$744

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Wed 10/1

3:35 pm-10:17 pm

2 stops35h 42m

Hilo Intl

Sat 11/1

9:00 pm-11:59 pm

2 stops22h 59m

$851

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Mon 9/22

6:00 am-3:59 pm

2 stops14h 59m

Hilo Intl

Tue 9/23

12:20 pm-8:37 am

2 stops15h 17m

$854

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Tue 9/23

4:40 pm-5:39 pm

2 stops29h 59m

Hilo Intl

Tue 10/21

6:00 am-6:57 pm

3 stops31h 57m

$933

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Tue 10/7

6:33 am-7:20 pm

2 stops17h 47m

$342

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Mon 10/6

6:15 am-8:06 am

2 stops30h 51m

$411

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Mon 10/13

4:50 pm-8:06 am

2 stops44h 16m

$516

St. LouisHilo

STL - ITO

STLITO

Lambert-St Louis

Sat 10/11

5:15 am-10:23 am

2 stops34h 08m

$583

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 13 results
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Best time to book a flight from St. Louis to Hilo

Have a flexible travel schedule? Discover the best time to fly to Hilo from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Hilo

What is the cheapest month to book a flight from St. Louis to Hilo?

Currently, March is the cheapest month in which you can book a flight from St. Louis to Hilo (average of $330). Flying from St. Louis to Hilo in December is currently the most expensive (average of $726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Hilo

Get insights into the airlines that provide service to Hilo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hilo. Reviews last updated September 17, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines from St. Louis to Hilo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Hilo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Hilo?

    Alaska Airlines can get you from St. Louis to Hilo in just under 20h 26m. Your travel time can differ by up to . The distance from St. Louis to Hilo is about 4026 mi.

  • What is the cheapest airline to fly from St. Louis to Hilo round-trip?

    Our cheapest airline available from St. Louis to Hilo is Alaska Airlines. Our recent data shows that you can find tickets from as low as $520 on this airline. Alaska Airlines is priced at 43% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from St. Louis to Hilo that include hotel bookings?

    Yes. In addition to deals on St. Louis to Hilo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Hilo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Hilo.

  • Can I find deals for business class flights from St. Louis to Hilo?

    Yes. Cheapflights offers flight deals from St. Louis to Hilo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Hilo?

    Currently, March is the cheapest month in which you can book a flight from St. Louis to Hilo (average of $330). Flying from St. Louis to Hilo in December is currently the most expensive (average of $726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Hilo

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Top airline flying from St. Louis to Hilo

Discover the top airline that operate flights from St. Louis to Hilo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$520Average$685FlexibilityNo cancel feeOn-time75%

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