Delta, American, United, and other airlines are extending frequent-flyer benefits and offering new flexibility on tickets to keep customers happy during the coronavirus pandemic

United is also offering extra flexibility and extending MileagePlus status for members.

Waived change fees for travel through all of 2020

United announced last week that it would waive change and cancellation fees on all flights through 2020. However, you'll need to make your change by the end of April in order to get those fees waived.

The exception is for those traveling in May — they can continue to change or cancel flights without fees until the date of travel.

Keep in mind that if you choose to cancel a flight, you'll get a voucher for the value of your ticket to use for a future trip, not a refund. If the airline cancels your flight, though, you're entitled to a normal refund.

Vouchers and credits are extended for up to two years

Travel certificates, which are normally valid for a year from the date of issue, are now valid for 24 months.

If you choose to cancel a trip or a flight that the airline hasn't canceled, you'll get a certificate to use for a future flight. Although you'll have to use the certificate to book within 24 months, the travel that you book can be later than that.

Extending MileagePlus elite status for 2021

United said it will extend every elite frequent flyer's status level through the 2021 status year.

That means no urgency to requalify in 2020, as flights remain scarce and many companies keep business travel suspended.

The airline said it will also reduce the Premier qualifying points (PQP) requirement for those looking to reach a new tier in 2021, and increasing the amount of PQPs that co-brand credit card holders can earn through spending.

United said it would also extend the expiration dates for PlusPoints — which can be used by United 1K and Platinum members to upgrade flights — by six months.

Extending other benefits for MileagePlus members

United will extend annual membership and subscription benefits by six months, including United Club memberships, subscriptions for Economy Plus and Wi-Fi, and checked bag fees.

American Airlines followed Delta and United by announcing status extensions this week, but has already had new flexible policies in place due to the outbreak.

Waived change fees and extensions on travel credits and vouchers

American is letting anyone with summer travel plans change their dates or cancel their tickets without fees.

If you purchased a ticket anytime before April 7, 2020 for travel through September 30, 2020, you can rebook or cancel without fees (keep in mind that if you cancel, you'll get credits for a future trip.

If the ticket, credit, or voucher is set to expire before September 30, it can be used for travel through the end of 2021.

Finally, if you buy a new trip between March 1 and May 31, 2020, for future travel, you can change it any any time without change fees.

Extending AAdvantage elite status through 2021

American joined Delta and United by announcing that it would extend every elite frequent flyer's status through the 2021 status year.

That means that if you hold AAdvantage Gold status now, you'll keep it until January 31, 2022.

For those without status who are still flying now, or who return to the skies later this year, the threshold to earn new status or a higher tier for 2021 has been lowered. That means that fewer elite qualification dollars (EQDs), miles (EQMs), and segments (EQSs) will be required.

Admirals Club memberships extended

All Admirals Club airport lounge memberships and one-time passes will be automatically extended for six months beyond their current expiration date.

According to the airline, the extension applies to active members as of March 1, 2020. New memberships purchased between March 1 and May 31, 2020 will also get the extension.

For one-time passes, the extension applies to passes that were set to expire between March 1 and May 31, 2020.

Vacation credits for elite status holders

AAdvantage members with elite status can receive a credit towards an American Airlines Vacations package, good for "something to look forward to when travel resumes," the airline said in its announcement.

Elite members will receive up to $400 towards a vacation, depending on the package. Packages typically include airfare and hotel stays.

Details were not immediately available.