Cheap flights from Portland, OR to St. Louis, MO

Flights starting at £119. Choose between Hawaiian Airlines, Alaska Airlines, or United Airlines to find the best price.

One search, all the flights

We find you the best flight deals and travel hacks so that you can choose how to book.

Rise above all travel anxieties

With the Kiwi.com Guarantee we have your back with whatever happens.

Trusted by millions

Join over 10 million yearly travellers booking with ease.

How much do flights to St. Louis cost?

Key info about flying to St. Louis

Depart from
Portland International
Arrive to
St. Louis Lambert International
Average flights per week
33
Flight distance

Check-in for a flight from Portland to St. Louis

NameCarrier codeIATA CodePassport needed during booking
Hawaiian AirlinesHALHANo
Alaska AirlinesASAASNo
United AirlinesUALUAYes
American AirlinesAALAANo

Weather in St. Louis

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January3°C-3°C
February6°C-2°C
March13°C3°C
April18°C8°C
May24°C14°C
June29°C19°C
July31°C21°C
August30°C20°C
September27°C16°C
October20°C10°C
November12°C3°C
December7°C0°C
Hottest Month
31°C
July
Coldest month
-3°C
January
Sunny days
262
days per year
Snow days
9
days per year

14 day forecast

Wednesday
29 Jan
5°C0°C
5 Feb
72%
2°C0°C
Thursday
30 Jan
84%
3°C-4°C
6 Feb
88%
4°C1°C
Friday
31 Jan
88%
12°C3°C
7 Feb
18°C8°C
Saturday
1 Feb
10°C3°C
8 Feb
11°C5°C
Sunday
2 Feb
15°C5°C
9 Feb
5°C1°C
Monday
3 Feb
4°C-1°C
10 Feb
6°C0°C
Tuesday
4 Feb
5°C-2°C
11 Feb
10°C1°C

St. Louis travel tips

Spend time at Grant’s Farm, a longtime landmark in Grantwood Village in St. Louis
Do you like motorcycles and speed? Visit the St. Louis Moto Museum
Want to have some fun in the evening? Head to the partying areas of St. Louis
The most popular airlines for this route are Hawaiian Airlines, Alaska Airlines, United Airlines, and American Airlines. Portland and St. Louis have 33 direct flights per week.

Frequently asked questions

What are the most popular routes to and from Portland?
What are the most popular routes to and from St. Louis?
What airports are near Portland?
What airports are near St. Louis?
Which airlines fly between Portland and St. Louis?
When’s the best time to travel between Portland and St. Louis?
What flights operate between Portland and St. Louis?
How many airports are there near Portland?
How many airports are there near St. Louis?
What time do nonstop (direct) flights between Portland and St. Louis depart?
What time do nonstop (direct) flights between Portland and St. Louis arrive?
What time do flights between Portland and St. Louis depart?
What time do flights between Portland and St. Louis arrive?

Explore alternative trips

Flights from Portland

Flights to St. Louis

Popular routes

The nearest countries with flights to St. Louis

Here is a list of countries people are flying from

Other destination countries from Portland

Here is a list of countries people are flying to
Find the best connection from Portland to St. Louis
Search flights

Get more out of Kiwi.com with our mobile application

Download boarding passes

One-click booking

Get exclusive offers and prices

Mobile trip notifications


We hack the system,
you fly for less