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

Currently, August is the cheapest month in which you can book a flight from Hilo to St. Louis (average of $311). Flying from Hilo to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest day to fly from Hilo to St. Louis?

Travelers seeking maximum savings on their Hilo to St. Louis flight should consider departing on Monday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

Departing on a Sunday is a good option for securing a great price. You can expect to save up to 29% when planning your travel around this day of the week.

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

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

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

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

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

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

$568+ Flights from Hilo to St. Louis

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Hilo to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Hilo to St. Louis

Round-trip from	$664 (Alaska Airlines)
One-way from	$568 (Alaska Airlines)

From Hilo Intl to Lambert-St Louis

Search Deals

One-way flight from Hilo Intl to Lambert-St Louis

Search Deals

Find flight deals from Hilo to St. Louis

Cheapest flights from Hilo to St. Louis
Explore the most affordable flight options available from Hilo to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Fri 10/107:45 amITO - STL

2 stops35h 14mAlaska Airlines

Tue 10/146:33 amSTL - ITO

2 stops20h 46mAlaska Airlines

Deal found 7/2

$664

Thu 7/177:00 pmITO - STL

2 stops28h 54mUnited Airlines

Mon 7/215:41 pmSTL - ITO

2 stops28h 57mUnited Airlines

Deal found 7/2

$1,115

Best flights from Hilo to St. Louis
Discover carefully curated flight deals from Hilo to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Fri 10/107:45 amITO - STL

2 stops35h 14mAlaska Airlines

Tue 10/146:33 amSTL - ITO

2 stops20h 46mAlaska Airlines

Deal found 7/2

$664

Thu 7/177:00 pmITO - STL

2 stops28h 54mUnited Airlines

Mon 7/215:41 pmSTL - ITO

2 stops28h 57mUnited Airlines

Deal found 7/2

$1,115

Last-minute flights from Hilo to St. Louis
Discover last-minute flight deals from Hilo to St. Louis. Data last updated July 3, 2025 and is based on user searches.

Thu 7/177:00 pmITO - STL

2 stops28h 54mUnited Airlines

Mon 7/215:41 pmSTL - ITO

2 stops28h 57mUnited Airlines

Deal found 7/2

$1,115

Wed 8/64:25 pmITO - STL

2 stops17h 01mAlaska Airlines

Sun 11/94:01 pmSTL - ITO

2 stops28h 03mAlaska Airlines

Deal found 7/3

$735

One-way flights from Hilo to St. Louis
Search for one-way flight options from Hilo to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Sat 7/268:00 pmITO - STL

2 stops22h 59mAlaska Airlines

Deal found 7/3

$568

Sat 7/267:00 pmITO - STL

3 stops40h 45mUnited Airlines

Deal found 7/3

$767

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hilo to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Fri 10/10

7:45 am-11:59 pm

2 stops35h 14m

Lambert-St Louis

Tue 10/14

6:33 am-10:19 pm

2 stops20h 46m

$664

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Thu 7/17

7:00 pm-4:54 am

2 stops28h 54m

Lambert-St Louis

Mon 7/21

5:41 pm-5:38 pm

2 stops28h 57m

$1,115

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Sat 7/26

8:00 pm-11:59 pm

2 stops22h 59m

$568

HiloSt. Louis

ITO - STL

ITOSTL

Hilo Intl

Sat 7/26

7:00 pm-4:45 pm

3 stops40h 45m

$767

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Best time to book a flight from Hilo to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Hilo 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 Hilo to St. Louis

What is the cheapest time of day to fly from ITO to STL?

When flying from Hilo to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 24% versus a flight at noon.

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Alaska Airlines and United Airlines from Hilo to St. Louis 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

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,861 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Can I find deals for flights from Hilo to St. Louis that include hotel bookings?
Yes. In addition to deals on Hilo to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Hilo to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hilo to St. Louis.
Can I find deals for business class flights from Hilo to St. Louis?
Yes. Cheapflights offers flight deals from Hilo to St. Louis 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 Hilo to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Hilo to St. Louis (average of $311). Flying from Hilo to St. Louis in March is currently the most expensive (average of $356). 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

O'Fallon

Maryland Heights

Fairview Heights

Collinsville

Eureka

St. Peters

Glencoe

Alton

Festus

Chesterfield

Farmington

Browse thousands of different options on Cheapflights for your next trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$568+ Cheap flights from Hilo to St. Louis (ITO - STL)

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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Hilo to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Hilo to St. Louis

Round-trip from

One-way from

Find flight deals from Hilo to St. Louis

Cheapest flights from Hilo to St. LouisExplore the most affordable flight options available from Hilo to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Hilo to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hilo to St. Louis that are best for you.

Best time to book a flight from Hilo to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Hilo with our price prediction graph.

Cheapflights Insights

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

What is the cheapest time of day to fly from ITO to STL?

Find hourly flight availability from Hilo to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Alaska Airlines and United Airlines from Hilo to St. Louis 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.

Related info for your journey

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

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

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

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

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

Traveling to a place near Hilo?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Hilo to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Hilo to St. Louis
Explore the most affordable flight options available from Hilo to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.