$626 Cheap Flights from Newark Liberty Intl. Airport (EWR) to Sion (SIR)

View $626 flight on Thu, Feb 26, 2026Opens in a new window

Popular airlines from Newark Liberty Intl. Airport (EWR) to Sion (SIR)

Cheap Flights from Newark Liberty Intl. Airport to Sion (EWR-SIR)

Prices were available within the past 7 days and start at $626 for one-way flights and $1,066 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Feb 26 - Tue, Mar 3
EWR
New York
SIR
Sion
$1,066 Roundtrip, found 2 days ago
$1,066
Roundtrip
found 2 days ago
Select United flight, departing Thu, Feb 26 from New York to Sion, returning Tue, Mar 3, priced at $1,066 found 2 days ago
United
Thu, Feb 26 - Tue, Mar 3
EWR
New York
SIR
Sion
$1,076 Roundtrip, found 2 days ago
$1,076
Roundtrip
found 2 days ago
Select United flight, departing Thu, Feb 26 from New York to Sion, returning Tue, Mar 3, priced at $1,076 found 2 days ago
United
Thu, Feb 5 - Tue, Feb 10
EWR
New York
SIR
Sion
$1,416 Roundtrip, found 11 hours ago
$1,416
Roundtrip
found 11 hours ago
Select United flight, departing Thu, Feb 5 from New York to Sion, returning Tue, Feb 10, priced at $1,416 found 11 hours ago
United
Wed, Jan 14 - Mon, Jan 19
EWR
New York
SIR
Sion
$1,691 Roundtrip, found 3 days ago
$1,691
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jan 14 from New York to Sion, returning Mon, Jan 19, priced at $1,691 found 3 days ago
United
Wed, Jan 14 - Mon, Jan 19
EWR
New York
SIR
Sion
$1,726 Roundtrip, found 3 days ago
$1,726
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jan 14 from New York to Sion, returning Mon, Jan 19, priced at $1,726 found 3 days ago
United
Thu, Jun 18 - Thu, Jul 2
EWR
New York
SIR
Sion
$1,921 Roundtrip, found 1 day ago
$1,921
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jun 18 from New York to Sion, returning Thu, Jul 2, priced at $1,921 found 1 day ago
United
Thu, Jun 18 - Thu, Jul 2
EWR
New York
SIR
Sion
$1,931 Roundtrip, found 1 day ago
$1,931
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jun 18 from New York to Sion, returning Thu, Jul 2, priced at $1,931 found 1 day ago
United
Tue, Feb 24 - Sun, Mar 1
EWR
New York
SIR
Sion
$2,132 Roundtrip, found 3 days ago
$2,132
Roundtrip
found 3 days ago
Select United flight, departing Tue, Feb 24 from New York to Sion, returning Sun, Mar 1, priced at $2,132 found 3 days ago
United
Tue, Feb 24 - Sun, Mar 1
EWR
New York
SIR
Sion
$2,152 Roundtrip, found 3 days ago
$2,152
Roundtrip
found 3 days ago
Select United flight, departing Tue, Feb 24 from New York to Sion, returning Sun, Mar 1, priced at $2,152 found 3 days ago
United
Sat, Jan 17 - Wed, Jan 21
EWR
New York
SIR
Sion
$2,166 Roundtrip, found 1 day ago
$2,166
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jan 17 from New York to Sion, returning Wed, Jan 21, priced at $2,166 found 1 day ago
United
Tue, Feb 24 - Sun, Mar 1
EWR
New York
SIR
Sion
$2,352 Roundtrip, found 3 days ago
$2,352
Roundtrip
found 3 days ago
Select United flight, departing Tue, Feb 24 from New York to Sion, returning Sun, Mar 1, priced at $2,352 found 3 days ago

Frequently asked questions

How much does a flight from Liberty Intl. Airport (EWR) to Sion Airport (SIR) cost?
Grab a cheap one-way flight from $626 or cheap return flight from $1,066 from Liberty Intl. Airport (EWR) to Sion Airport (SIR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Liberty Intl. Airport (EWR) to Sion Airport (SIR)?
February is the most affordable month to fly from EWR to SIR. Traveling during quieter months is often the key to landing a great deal.
What is the cheapest airline that flies from Liberty Intl. Airport (EWR) to Sion Airport (SIR)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest EWR to SIR flight.
How many flights per day from Liberty Intl. Airport (EWR) to Sion Airport (SIR)?
Nonstop flights from Liberty Intl. Airport (EWR) to Sion Airport (SIR) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from EWR to SIR?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Liberty Intl. Airport (EWR) to Sion Airport (SIR)?
Book a flight from Liberty Intl. Airport (EWR) to Sion Airport (SIR) that leaves before 3 PM to reduce the likelihood of delays. Later departures are on average 22% more likely to be canceled.**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 Liberty Intl. Airport (EWR) to Sion Airport (SIR) last-minute?
Last-minute fares from EWR to SIR are usually more expensive. For the cheapest rates, start looking for flights ahead of time. That being said, if you're flexible with your travel plans, you may score a cheap fare just before your departure.
Is it cheaper to book an EWR to SIR flight and hotel package?
Compared with arranging hotels and flights separately, booking an EWR to SIR flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then tailor your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Liberty Intl. Airport (EWR) to Sion Airport (SIR)?
Typically, you can cancel or modify your EWR to SIR flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you need more details, visit our Customer Service portal.

Travel information

Origin airport
Newark Liberty Intl. Airport
Destination airport
Sion
Roundtrip price
$1,066
Distance
3921 mi

Book with confidence

Newark Liberty Intl. Airport to Sion Flights

The cheapest times to fly from Newark Liberty Intl. Airport to Sion

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 Newark Liberty Intl. Airport to Sion are during the month of February. You can find some of the cheapest flights from Newark Liberty Intl. Airport to Sion with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Newark Liberty Intl. Airport to Sion

Sunday is one of the best days to book for cheap flights from Newark Liberty Intl. Airport to Sion: 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 Newark Liberty Intl. Airport to Sion

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 Newark Liberty Intl. Airport to Sion in 2026. You can also book with separate airlines for your outbound and return journeys, from $626 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 Newark Liberty Intl. Airport to Sion 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 Newark Liberty Intl. Airport to Sion 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.

 

Newark Liberty Intl. Airport to Sion Flights

Explore a world of travel with Expedia

*Available to One Key members.