The company said it will give a $50 voucher to any customer who buys a ticket on Orbitz.com and can find a published fare for the same flight that is at least $5 cheaper, excluding fees.
The coupon will be redeemable for future travel, Orbitz said.
The "Low Fare Promise" campaign comes barely a month after Cendant, a travel and real estate company,for $1.25 billion. The deal will make Cendant the second-largest online travel company, after industry leader .
The offer is valid with tickets purchased both from Orbitz.com and from the Orbitz for Business site. The company offers flights through 455 airlines. The offer is valid for domestic flights only.
To qualify for the offer, a customer must fill out a claim form, available on Orbitz.com, on the same day he or she buys a ticket from the online agent. The $50 coupons will be redeemable on any future flights, hotels, rental cars or vacation packages purchased on Orbitz.com.