• 31 Jan, 2026

What is the best day to book a flight on United Airlines

For flight booking, you may look for a day when the fares are cheap, but in the travel industry, there is no ideal day for it. United Airlines dynamically adjusts fares daily based on travel demand. However, it occasionally offers discounted domestic and international flights on certain days of the week. For Domestic flights, Tuesday and Wednesday are great, while Monday and Friday are best for international flights. However, not all fares can be booked at budget-friendly prices, as prices fluctuate by route. Sundays can be a good time to book flexible fares on United Airlines. On this page, learn more about which days are best for booking United Airlines flights.

Which Day is Best to Book & Fly?

Based on past flight data, United Airlines has offered affordable flights almost every day of the week, but it varies seasonally. These insights help you find when and which days are best to book a United Airlines flight:

  • Tuesday and Friday: According to Expedia's 2025 Air Travel Hack Report, Tuesday to Friday are the best days to fly on domestic routes, where United Airlines fares are nearly 13% more affordable than on Sundays and Mondays. 
  • Wednesday and Saturday: On average, these days have the most price drops for international flights. For example, if you have a European trip, you can save an extra 10% when booking a United Airlines flight on these days of the week. 
  • Festive Days: If you are planning to fly during festive days, you are likely to encounter higher fares closer to the date. However, you may secure a cheaper deal with United Airlines if you book 40 to 80 days in advance. 

Why Off-Season is Best to Book United Airlines Flights?

In contrast to peak season, when travel costs are expensive, you should book your United Airlines flight during the off-peak season. Here are some of the top reasons why the off-season has the best days to book:

  • Lower Fares: Most United Airlines light prices are on the lower side, so you can easily book them.
  • Fewer Crowds: These days, travel demand is lower, so passenger traffic at airports and destinations is lower.
  • Flight Availability: You can easily find flights and seats at the best locations on the plane, enhancing your flight experience. 
  • Cost-effective transit: Ground-travel costs are generally low, so exploring streets and attractions will be more feasible.
  • Cheaper Accommodations: A night's stay would not be costly, and rooms are readily available for check-in. 

Tips to Book United Airlines Flights At Affordable Rates

  • Book in Advance: You should book a United Airlines flight at least two to four months in advance, depending on whether flying domestically or internationally, as fares are cheapest at that time. 
  • Frequent Flyer Program: Being a United MileagePlus member can help you get the best deals and discounts. Also, save more when booking flights at the last minute. 
  • Price Alerts: Set a price alert to notify you when United Airlines lowers the price for a specific route. Consider trusted metasearch engines like Google Flights. 
  • Credit/Debit Card: Use your credit or debit card to book a United Airlines flight and earn rewards points on every penny spent. Use reward points to pay for other expenses at the airport. 
  • Book via OTA: Always consider a reputable Online Travel Agency (OTA), such as Travomint, for booking a United Airlines flight, as it can help you find the cheapest day to fly to your destination. 
  • Have Flexibility: Be flexible with your travel dates, destinations, and airport, and book your flights accordingly.

Conclusion

Whether looking to book your United Airlines flight at affordable rates, stop waiting for the "Best" day when you can book cheap flights on any day. Use the provided tips and knowledge to find the best day to book & fly by grabbing cost-effective deals. Considering OTAs like Travomint are always the best option for booking cheaper flights, as they help you make travel arrangements cost-effectively by saving you time. 

Frequently Asked Questions

What is the cheapest month to fly on United Airlines?

Shoulder season or off-season months, such as January, March, October, and November, offer considerably cheaper deals on United Airlines.

How early should I book a United Airlines flight to get cheaper airfare?

You should book at least two to four months early to get cheaper airfare on United Airlines.

What is the best day to get a United Airlines flight ticket?

Tuesdays and Wednesdays generally have the most affordable United Airlines flights.

Is a United Airlines flight cheap at the last minute?

No, United Airlines flights are generally expensive at the last minute. However, if you are a MileagePlus member, you may get exclusive last-minute deals on popular routes.

How can I book a United Airlines flight at the lowest rate?

You can use MileagePlus points, flight credits, vouchers, promo codes, reward points, etc, to book United Airlines flights at the lowest possible rates.

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